Re: Pentax 17-70 f4 and SDM motor question
On Sat, Mar 22, 2014 at 9:45 PM, Rob Studdert wrote: > I bought the Sigma 17-70 2.8-4 a week ago when my Sigma 17-50/2.8 was > in for repair, I quite like it. It's pretty sharp, if it's not looking > great consider checking that it's actually focused, it may need some > focus adjustment. I saw little difference between the two lenses, but the Pentax one llooked to me a tad sharper. I did not see the point of going and extra $100 just for 2.8 at the wide end, for a lens that will mostly be used at 45-70, still it was nice and quite and fast AF Dave >> >> Dave >> >> On Fri, Mar 21, 2014 at 1:59 PM, David J Brooks wrote: >>> Thanks for taking the time Mark C. >>> >>> The lenses are in to inspect. Salesman tested both lenses on what ever >>> Pentax DSLR they have. Says the Pentax is better than the first one, >>> but the Sigma i =s much faster on the AF than the Pentax. >>> >>> Time will tell Saturday >>> >>> Dave >>> >>> On Thu, Mar 20, 2014 at 8:44 PM, Mark C wrote: I tested the 17-70 on my K-5. It was a *little* slower but I don't think that I would have noticed if I had not been counting. The one thing I noticed if that if the camera failed to achieve a focus lock and then I tried to focus on a new subject, it took 1 to maybe 1.5 seconds to get a lock. What I mean is - if I pointed it at a plain white wall the camera often would not lock at all and just stop hunting after a short while. If I then switched to a subject with high contrast elements it would take a second or so to focus - longer than if I manual defocused the lens before testing. I tried the lens on the K-01 and it consistently took about 2 seconds to focus - no delay in the lens starting to search for the focus point, but it moved slowly and generally took a couple of seconds to lock in. Just for fun I tried it on a K-10d and it routinely took 1-3 seconds to get a lock, but it was surely the body's fault. The lens was hunting all the time. It was interesting to compare the K-3, K-5< K-10 and K-01. Without a doubt the K-3 blew all of the others away and I don't recall any shots when the camera indicated the shot was in focus when it was not. I had a few issues with the K-5 and many with the K-10. The K-01 was very accurate but very slow. Hopefully the new lens will fix the problem you experienced. Mark On 3/20/2014 1:25 PM, David J Brooks wrote: > > On Thu, Mar 20, 2014 at 12:59 PM, Mark C wrote: >> >> Hi David - >> >> I just tested my 17-70 @ 50mm indoors in dim light on a K-3. I tried >> counting off the seconds "one-thousand-one..." but never got beyond >> "thous" usually stopped a "one..." I can try it on a K-5 tonight, but >> mine is very fast. And quiet. > > Pleas do Mark if you can. The copy i tried started to slowly focus > after 3 thousand so it probably took 2 one thousands.:-)Wehn the rep > was trying i could see the focus ring ever so slowly moving, then bamo > it was in focus. > > Dave >> >> Mark >> >> >> On 3/19/2014 6:17 PM, David J Brooks wrote: >>> >>> Hi all >>> >>> I went to pick up above mentioned lens this afternoon. loks and feel >>> nice on the K-5, however me thinks there is a problem. >>> I know the AF of Canon and Nikon are quite fast leaving us Pentaxians >>> hunting and pecking our way through landscapes and soccer photos, BUT, >>> 2-3 seconds to lock on and focus on a static object.?? Me thinks >>> that's a bit to slow. >>> The salesman and i played with it for 10-15 minutes. It did get a tad >>> faster to focus but it was still painfully slow. I know it will not be >>> as snappy as my Nikon 70-200 f2,9 VR lens, you can barely hear >>> anything and it locks on faster than Mike Johnson deleting a cat >>> photo. >>> >>> So, am i missing something with this SDM system. Is it painfully slow >>> or should it be as fast or faster to AF on a subject as the screw >>> focus lenses. Do i need to adjust a menu setting or something. >>> >>> Another is on order for Saturday >>> >>> Dave >>> >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. > > > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. >>> >>> >>> >>> -- >>> Documenting Life in Rural Ontario. >>> www.caughtinmotion.com >>> http://brooksinthecountry.blogspot.com/ >>> York Region, Ontario, Canada >> >> >> >> -- >> Documenting Life in Rural Ontario. >> www.caughtinm
Re: Pentax 17-70 f4 and SDM motor question
I bought the Sigma 17-70 2.8-4 a week ago when my Sigma 17-50/2.8 was in for repair, I quite like it. It's pretty sharp, if it's not looking great consider checking that it's actually focused, it may need some focus adjustment. On 23 March 2014 04:14, David J Brooks wrote: > had a look at the Sigma 17-70 2.8-4 and the Pentax 17-70 4 today. The > Pentax unit was much much faster than the last unit for AF, about on > par with any of my other lenses but much quieter. The Sigma was $100 > more and offered a 7 year warranty and f2.8 at the wide open end, and > AF was faster than the Pentax but i decided to go with the Pentax. The > sharpness looked a bit nicer, is lighter and the focus ring moves the > correct way. LOL > > I have till Tuesday when he send the Sigma back if i change my mind > > Time will tel > > Dave > > On Fri, Mar 21, 2014 at 1:59 PM, David J Brooks wrote: >> Thanks for taking the time Mark C. >> >> The lenses are in to inspect. Salesman tested both lenses on what ever >> Pentax DSLR they have. Says the Pentax is better than the first one, >> but the Sigma i =s much faster on the AF than the Pentax. >> >> Time will tell Saturday >> >> Dave >> >> On Thu, Mar 20, 2014 at 8:44 PM, Mark C wrote: >>> I tested the 17-70 on my K-5. It was a *little* slower but I don't think >>> that I would have noticed if I had not been counting. The one thing I >>> noticed if that if the camera failed to achieve a focus lock and then I >>> tried to focus on a new subject, it took 1 to maybe 1.5 seconds to get a >>> lock. What I mean is - if I pointed it at a plain white wall the camera >>> often would not lock at all and just stop hunting after a short while. If I >>> then switched to a subject with high contrast elements it would take a >>> second or so to focus - longer than if I manual defocused the lens before >>> testing. >>> >>> I tried the lens on the K-01 and it consistently took about 2 seconds to >>> focus - no delay in the lens starting to search for the focus point, but it >>> moved slowly and generally took a couple of seconds to lock in. >>> >>> Just for fun I tried it on a K-10d and it routinely took 1-3 seconds to get >>> a lock, but it was surely the body's fault. The lens was hunting all the >>> time. >>> >>> It was interesting to compare the K-3, K-5< K-10 and K-01. Without a doubt >>> the K-3 blew all of the others away and I don't recall any shots when the >>> camera indicated the shot was in focus when it was not. I had a few issues >>> with the K-5 and many with the K-10. The K-01 was very accurate but very >>> slow. >>> >>> Hopefully the new lens will fix the problem you experienced. >>> >>> Mark >>> >>> >>> >>> On 3/20/2014 1:25 PM, David J Brooks wrote: On Thu, Mar 20, 2014 at 12:59 PM, Mark C wrote: > > Hi David - > > I just tested my 17-70 @ 50mm indoors in dim light on a K-3. I tried > counting off the seconds "one-thousand-one..." but never got beyond > "thous" usually stopped a "one..." I can try it on a K-5 tonight, but > mine is very fast. And quiet. Pleas do Mark if you can. The copy i tried started to slowly focus after 3 thousand so it probably took 2 one thousands.:-)Wehn the rep was trying i could see the focus ring ever so slowly moving, then bamo it was in focus. Dave > > Mark > > > On 3/19/2014 6:17 PM, David J Brooks wrote: >> >> Hi all >> >> I went to pick up above mentioned lens this afternoon. loks and feel >> nice on the K-5, however me thinks there is a problem. >> I know the AF of Canon and Nikon are quite fast leaving us Pentaxians >> hunting and pecking our way through landscapes and soccer photos, BUT, >> 2-3 seconds to lock on and focus on a static object.?? Me thinks >> that's a bit to slow. >> The salesman and i played with it for 10-15 minutes. It did get a tad >> faster to focus but it was still painfully slow. I know it will not be >> as snappy as my Nikon 70-200 f2,9 VR lens, you can barely hear >> anything and it locks on faster than Mike Johnson deleting a cat >> photo. >> >> So, am i missing something with this SDM system. Is it painfully slow >> or should it be as fast or faster to AF on a subject as the screw >> focus lenses. Do i need to adjust a menu setting or something. >> >> Another is on order for Saturday >> >> Dave >> > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. >>> >>> >>> -- >>> PDML Pentax-Discuss Mail List >>> PDML@pdml.net >>> http://pdml.net/mailman/listinfo/pdml_pdml.net >>> to UNSUBSCRIBE from the PDML, please visit the link directly above and >>> follow the directions. >> >> >> >> -- >> Documenting Life in Rural Ontario. >> www.caughtinmotion.com
Re: Pentax 17-70 f4 and SDM motor question
had a look at the Sigma 17-70 2.8-4 and the Pentax 17-70 4 today. The Pentax unit was much much faster than the last unit for AF, about on par with any of my other lenses but much quieter. The Sigma was $100 more and offered a 7 year warranty and f2.8 at the wide open end, and AF was faster than the Pentax but i decided to go with the Pentax. The sharpness looked a bit nicer, is lighter and the focus ring moves the correct way. LOL I have till Tuesday when he send the Sigma back if i change my mind Time will tel Dave On Fri, Mar 21, 2014 at 1:59 PM, David J Brooks wrote: > Thanks for taking the time Mark C. > > The lenses are in to inspect. Salesman tested both lenses on what ever > Pentax DSLR they have. Says the Pentax is better than the first one, > but the Sigma i =s much faster on the AF than the Pentax. > > Time will tell Saturday > > Dave > > On Thu, Mar 20, 2014 at 8:44 PM, Mark C wrote: >> I tested the 17-70 on my K-5. It was a *little* slower but I don't think >> that I would have noticed if I had not been counting. The one thing I >> noticed if that if the camera failed to achieve a focus lock and then I >> tried to focus on a new subject, it took 1 to maybe 1.5 seconds to get a >> lock. What I mean is - if I pointed it at a plain white wall the camera >> often would not lock at all and just stop hunting after a short while. If I >> then switched to a subject with high contrast elements it would take a >> second or so to focus - longer than if I manual defocused the lens before >> testing. >> >> I tried the lens on the K-01 and it consistently took about 2 seconds to >> focus - no delay in the lens starting to search for the focus point, but it >> moved slowly and generally took a couple of seconds to lock in. >> >> Just for fun I tried it on a K-10d and it routinely took 1-3 seconds to get >> a lock, but it was surely the body's fault. The lens was hunting all the >> time. >> >> It was interesting to compare the K-3, K-5< K-10 and K-01. Without a doubt >> the K-3 blew all of the others away and I don't recall any shots when the >> camera indicated the shot was in focus when it was not. I had a few issues >> with the K-5 and many with the K-10. The K-01 was very accurate but very >> slow. >> >> Hopefully the new lens will fix the problem you experienced. >> >> Mark >> >> >> >> On 3/20/2014 1:25 PM, David J Brooks wrote: >>> >>> On Thu, Mar 20, 2014 at 12:59 PM, Mark C wrote: Hi David - I just tested my 17-70 @ 50mm indoors in dim light on a K-3. I tried counting off the seconds "one-thousand-one..." but never got beyond "thous" usually stopped a "one..." I can try it on a K-5 tonight, but mine is very fast. And quiet. >>> >>> Pleas do Mark if you can. The copy i tried started to slowly focus >>> after 3 thousand so it probably took 2 one thousands.:-)Wehn the rep >>> was trying i could see the focus ring ever so slowly moving, then bamo >>> it was in focus. >>> >>> Dave Mark On 3/19/2014 6:17 PM, David J Brooks wrote: > > Hi all > > I went to pick up above mentioned lens this afternoon. loks and feel > nice on the K-5, however me thinks there is a problem. > I know the AF of Canon and Nikon are quite fast leaving us Pentaxians > hunting and pecking our way through landscapes and soccer photos, BUT, > 2-3 seconds to lock on and focus on a static object.?? Me thinks > that's a bit to slow. > The salesman and i played with it for 10-15 minutes. It did get a tad > faster to focus but it was still painfully slow. I know it will not be > as snappy as my Nikon 70-200 f2,9 VR lens, you can barely hear > anything and it locks on faster than Mike Johnson deleting a cat > photo. > > So, am i missing something with this SDM system. Is it painfully slow > or should it be as fast or faster to AF on a subject as the screw > focus lenses. Do i need to adjust a menu setting or something. > > Another is on order for Saturday > > Dave > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. >>> >>> >>> >> >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. > > > > -- > Documenting Life in Rural Ontario. > www.caughtinmotion.com > http://brooksinthecountry.blogspot.com/ > York Region, Ontario, Canada -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 17-70 f4 and SDM motor question
Thanks for taking the time Mark C. The lenses are in to inspect. Salesman tested both lenses on what ever Pentax DSLR they have. Says the Pentax is better than the first one, but the Sigma i =s much faster on the AF than the Pentax. Time will tell Saturday Dave On Thu, Mar 20, 2014 at 8:44 PM, Mark C wrote: > I tested the 17-70 on my K-5. It was a *little* slower but I don't think > that I would have noticed if I had not been counting. The one thing I > noticed if that if the camera failed to achieve a focus lock and then I > tried to focus on a new subject, it took 1 to maybe 1.5 seconds to get a > lock. What I mean is - if I pointed it at a plain white wall the camera > often would not lock at all and just stop hunting after a short while. If I > then switched to a subject with high contrast elements it would take a > second or so to focus - longer than if I manual defocused the lens before > testing. > > I tried the lens on the K-01 and it consistently took about 2 seconds to > focus - no delay in the lens starting to search for the focus point, but it > moved slowly and generally took a couple of seconds to lock in. > > Just for fun I tried it on a K-10d and it routinely took 1-3 seconds to get > a lock, but it was surely the body's fault. The lens was hunting all the > time. > > It was interesting to compare the K-3, K-5< K-10 and K-01. Without a doubt > the K-3 blew all of the others away and I don't recall any shots when the > camera indicated the shot was in focus when it was not. I had a few issues > with the K-5 and many with the K-10. The K-01 was very accurate but very > slow. > > Hopefully the new lens will fix the problem you experienced. > > Mark > > > > On 3/20/2014 1:25 PM, David J Brooks wrote: >> >> On Thu, Mar 20, 2014 at 12:59 PM, Mark C wrote: >>> >>> Hi David - >>> >>> I just tested my 17-70 @ 50mm indoors in dim light on a K-3. I tried >>> counting off the seconds "one-thousand-one..." but never got beyond >>> "thous" usually stopped a "one..." I can try it on a K-5 tonight, but >>> mine is very fast. And quiet. >> >> Pleas do Mark if you can. The copy i tried started to slowly focus >> after 3 thousand so it probably took 2 one thousands.:-)Wehn the rep >> was trying i could see the focus ring ever so slowly moving, then bamo >> it was in focus. >> >> Dave >>> >>> Mark >>> >>> >>> On 3/19/2014 6:17 PM, David J Brooks wrote: Hi all I went to pick up above mentioned lens this afternoon. loks and feel nice on the K-5, however me thinks there is a problem. I know the AF of Canon and Nikon are quite fast leaving us Pentaxians hunting and pecking our way through landscapes and soccer photos, BUT, 2-3 seconds to lock on and focus on a static object.?? Me thinks that's a bit to slow. The salesman and i played with it for 10-15 minutes. It did get a tad faster to focus but it was still painfully slow. I know it will not be as snappy as my Nikon 70-200 f2,9 VR lens, you can barely hear anything and it locks on faster than Mike Johnson deleting a cat photo. So, am i missing something with this SDM system. Is it painfully slow or should it be as fast or faster to AF on a subject as the screw focus lenses. Do i need to adjust a menu setting or something. Another is on order for Saturday Dave >>> >>> -- >>> PDML Pentax-Discuss Mail List >>> PDML@pdml.net >>> http://pdml.net/mailman/listinfo/pdml_pdml.net >>> to UNSUBSCRIBE from the PDML, please visit the link directly above and >>> follow the directions. >> >> >> > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 17-70 f4 and SDM motor question
I tested the 17-70 on my K-5. It was a *little* slower but I don't think that I would have noticed if I had not been counting. The one thing I noticed if that if the camera failed to achieve a focus lock and then I tried to focus on a new subject, it took 1 to maybe 1.5 seconds to get a lock. What I mean is - if I pointed it at a plain white wall the camera often would not lock at all and just stop hunting after a short while. If I then switched to a subject with high contrast elements it would take a second or so to focus - longer than if I manual defocused the lens before testing. I tried the lens on the K-01 and it consistently took about 2 seconds to focus - no delay in the lens starting to search for the focus point, but it moved slowly and generally took a couple of seconds to lock in. Just for fun I tried it on a K-10d and it routinely took 1-3 seconds to get a lock, but it was surely the body's fault. The lens was hunting all the time. It was interesting to compare the K-3, K-5< K-10 and K-01. Without a doubt the K-3 blew all of the others away and I don't recall any shots when the camera indicated the shot was in focus when it was not. I had a few issues with the K-5 and many with the K-10. The K-01 was very accurate but very slow. Hopefully the new lens will fix the problem you experienced. Mark On 3/20/2014 1:25 PM, David J Brooks wrote: On Thu, Mar 20, 2014 at 12:59 PM, Mark C wrote: Hi David - I just tested my 17-70 @ 50mm indoors in dim light on a K-3. I tried counting off the seconds "one-thousand-one..." but never got beyond "thous" usually stopped a "one..." I can try it on a K-5 tonight, but mine is very fast. And quiet. Pleas do Mark if you can. The copy i tried started to slowly focus after 3 thousand so it probably took 2 one thousands.:-)Wehn the rep was trying i could see the focus ring ever so slowly moving, then bamo it was in focus. Dave Mark On 3/19/2014 6:17 PM, David J Brooks wrote: Hi all I went to pick up above mentioned lens this afternoon. loks and feel nice on the K-5, however me thinks there is a problem. I know the AF of Canon and Nikon are quite fast leaving us Pentaxians hunting and pecking our way through landscapes and soccer photos, BUT, 2-3 seconds to lock on and focus on a static object.?? Me thinks that's a bit to slow. The salesman and i played with it for 10-15 minutes. It did get a tad faster to focus but it was still painfully slow. I know it will not be as snappy as my Nikon 70-200 f2,9 VR lens, you can barely hear anything and it locks on faster than Mike Johnson deleting a cat photo. So, am i missing something with this SDM system. Is it painfully slow or should it be as fast or faster to AF on a subject as the screw focus lenses. Do i need to adjust a menu setting or something. Another is on order for Saturday Dave -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 17-70 f4 and SDM motor question
On Thu, Mar 20, 2014 at 12:59 PM, Mark C wrote: > Hi David - > > I just tested my 17-70 @ 50mm indoors in dim light on a K-3. I tried > counting off the seconds "one-thousand-one..." but never got beyond > "thous" usually stopped a "one..." I can try it on a K-5 tonight, but > mine is very fast. And quiet. Pleas do Mark if you can. The copy i tried started to slowly focus after 3 thousand so it probably took 2 one thousands.:-)Wehn the rep was trying i could see the focus ring ever so slowly moving, then bamo it was in focus. Dave > > Mark > > > On 3/19/2014 6:17 PM, David J Brooks wrote: >> >> Hi all >> >> I went to pick up above mentioned lens this afternoon. loks and feel >> nice on the K-5, however me thinks there is a problem. >> I know the AF of Canon and Nikon are quite fast leaving us Pentaxians >> hunting and pecking our way through landscapes and soccer photos, BUT, >> 2-3 seconds to lock on and focus on a static object.?? Me thinks >> that's a bit to slow. >> The salesman and i played with it for 10-15 minutes. It did get a tad >> faster to focus but it was still painfully slow. I know it will not be >> as snappy as my Nikon 70-200 f2,9 VR lens, you can barely hear >> anything and it locks on faster than Mike Johnson deleting a cat >> photo. >> >> So, am i missing something with this SDM system. Is it painfully slow >> or should it be as fast or faster to AF on a subject as the screw >> focus lenses. Do i need to adjust a menu setting or something. >> >> Another is on order for Saturday >> >> Dave >> > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 17-70 f4 and SDM motor question
On Thu, Mar 20, 2014 at 1:08 PM, P.J. Alling wrote: > Most reviews of that lens seem to indicate that it focuses pretty fast, so I > think there's probably something wrong with the copy you've got. I'd go > back to the store and exchange it. The copy they had never made it out of the store PJ, they are getting another in. Rep says warhouse has a lot so hopefully the second one ois better. Dave > > > On 3/20/2014 12:54 PM, David J Brooks wrote: >> >> Yes this was quiet, which is fine but way to slow, 2-3 seconds to >> focus on a static object is pretty bad i have to say. >> They have ordered another and i have asked them to order in a Sigma >> 17-70 f2.8-4 to try just in case. PF gives the Sigma 2 pixels up. >> >> Dave >> >> On Thu, Mar 20, 2014 at 12:38 AM, Ken Waller wrote: >>> >>> Without a side by side comparison I wouldn't say my 16-50 mm f2.8 D* is >>> significantly slower than any of my screw drive lenses. Seems noticeably >>> faster - and definitely quieter. >>> >>> Kenneth Waller >>> http://www.pentaxphotogallery.com/kennethwaller >>> >>> - Original Message - From: "Dario Bonazza" >>> >>> Subject: Re: Pentax 17-70 f4 and SDM motor question >>> >>> >>> >>>> Well, the DA* 50-135mm SDM is probably the slowest AF lens on Earth, >>>> gaining it the nickname of "the sloth". Generally speaking, SDM lenses >>>> are >>>> slower than both screw-driven ad DC Pentax AF lenses, so the DA 17-70mm >>>> is a >>>> good candidate for being another slow-AF lens. However, I own it and I >>>> don't >>>> find it THAT slow as you pointed out. >>>> There is however another problem I saw on several samples of that lens >>>> and >>>> is the almost impossibility to autofocus above 50mm focal length, >>>> hunting >>>> forever while you try & find the focus. Perhaps that's the problem you >>>> spotted. >>>> >>>> Dario >>>> >>>> -Messaggio originale- From: David J Brooks >>>> Sent: Wednesday, March 19, 2014 11:17 PM >>>> To: Pentax Discuss >>>> Subject: Pentax 17-70 f4 and SDM motor question >>>> >>>> Hi all >>>> >>>> I went to pick up above mentioned lens this afternoon. loks and feel >>>> nice on the K-5, however me thinks there is a problem. >>>> I know the AF of Canon and Nikon are quite fast leaving us Pentaxians >>>> hunting and pecking our way through landscapes and soccer photos, BUT, >>>> 2-3 seconds to lock on and focus on a static object.?? Me thinks >>>> that's a bit to slow. >>>> The salesman and i played with it for 10-15 minutes. It did get a tad >>>> faster to focus but it was still painfully slow. I know it will not be >>>> as snappy as my Nikon 70-200 f2,9 VR lens, you can barely hear >>>> anything and it locks on faster than Mike Johnson deleting a cat >>>> photo. >>>> >>>> So, am i missing something with this SDM system. Is it painfully slow >>>> or should it be as fast or faster to AF on a subject as the screw >>>> focus lenses. Do i need to adjust a menu setting or something. >>>> >>>> Another is on order for Saturday >>>> >>>> Dave >>> >>> >>> >>> -- >>> PDML Pentax-Discuss Mail List >>> PDML@pdml.net >>> http://pdml.net/mailman/listinfo/pdml_pdml.net >>> to UNSUBSCRIBE from the PDML, please visit the link directly above and >>> follow the directions. >> >> >> > > > -- > A newspaper is a device for making the ignorant more ignorant, and the > crazy, crazier. > > - H.L.Mencken > > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 17-70 f4 and SDM motor question
Most reviews of that lens seem to indicate that it focuses pretty fast, so I think there's probably something wrong with the copy you've got. I'd go back to the store and exchange it. On 3/20/2014 12:54 PM, David J Brooks wrote: Yes this was quiet, which is fine but way to slow, 2-3 seconds to focus on a static object is pretty bad i have to say. They have ordered another and i have asked them to order in a Sigma 17-70 f2.8-4 to try just in case. PF gives the Sigma 2 pixels up. Dave On Thu, Mar 20, 2014 at 12:38 AM, Ken Waller wrote: Without a side by side comparison I wouldn't say my 16-50 mm f2.8 D* is significantly slower than any of my screw drive lenses. Seems noticeably faster - and definitely quieter. Kenneth Waller http://www.pentaxphotogallery.com/kennethwaller - Original Message - From: "Dario Bonazza" Subject: Re: Pentax 17-70 f4 and SDM motor question Well, the DA* 50-135mm SDM is probably the slowest AF lens on Earth, gaining it the nickname of "the sloth". Generally speaking, SDM lenses are slower than both screw-driven ad DC Pentax AF lenses, so the DA 17-70mm is a good candidate for being another slow-AF lens. However, I own it and I don't find it THAT slow as you pointed out. There is however another problem I saw on several samples of that lens and is the almost impossibility to autofocus above 50mm focal length, hunting forever while you try & find the focus. Perhaps that's the problem you spotted. Dario -Messaggio originale- From: David J Brooks Sent: Wednesday, March 19, 2014 11:17 PM To: Pentax Discuss Subject: Pentax 17-70 f4 and SDM motor question Hi all I went to pick up above mentioned lens this afternoon. loks and feel nice on the K-5, however me thinks there is a problem. I know the AF of Canon and Nikon are quite fast leaving us Pentaxians hunting and pecking our way through landscapes and soccer photos, BUT, 2-3 seconds to lock on and focus on a static object.?? Me thinks that's a bit to slow. The salesman and i played with it for 10-15 minutes. It did get a tad faster to focus but it was still painfully slow. I know it will not be as snappy as my Nikon 70-200 f2,9 VR lens, you can barely hear anything and it locks on faster than Mike Johnson deleting a cat photo. So, am i missing something with this SDM system. Is it painfully slow or should it be as fast or faster to AF on a subject as the screw focus lenses. Do i need to adjust a menu setting or something. Another is on order for Saturday Dave -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- A newspaper is a device for making the ignorant more ignorant, and the crazy, crazier. - H.L.Mencken -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 17-70 f4 and SDM motor question
Yes this was quiet, which is fine but way to slow, 2-3 seconds to focus on a static object is pretty bad i have to say. They have ordered another and i have asked them to order in a Sigma 17-70 f2.8-4 to try just in case. PF gives the Sigma 2 pixels up. Dave On Thu, Mar 20, 2014 at 12:38 AM, Ken Waller wrote: > Without a side by side comparison I wouldn't say my 16-50 mm f2.8 D* is > significantly slower than any of my screw drive lenses. Seems noticeably > faster - and definitely quieter. > > Kenneth Waller > http://www.pentaxphotogallery.com/kennethwaller > > - Original Message - From: "Dario Bonazza" > > Subject: Re: Pentax 17-70 f4 and SDM motor question > > > >> Well, the DA* 50-135mm SDM is probably the slowest AF lens on Earth, >> gaining it the nickname of "the sloth". Generally speaking, SDM lenses are >> slower than both screw-driven ad DC Pentax AF lenses, so the DA 17-70mm is a >> good candidate for being another slow-AF lens. However, I own it and I don't >> find it THAT slow as you pointed out. >> There is however another problem I saw on several samples of that lens and >> is the almost impossibility to autofocus above 50mm focal length, hunting >> forever while you try & find the focus. Perhaps that's the problem you >> spotted. >> >> Dario >> >> -----Messaggio originale- From: David J Brooks >> Sent: Wednesday, March 19, 2014 11:17 PM >> To: Pentax Discuss >> Subject: Pentax 17-70 f4 and SDM motor question >> >> Hi all >> >> I went to pick up above mentioned lens this afternoon. loks and feel >> nice on the K-5, however me thinks there is a problem. >> I know the AF of Canon and Nikon are quite fast leaving us Pentaxians >> hunting and pecking our way through landscapes and soccer photos, BUT, >> 2-3 seconds to lock on and focus on a static object.?? Me thinks >> that's a bit to slow. >> The salesman and i played with it for 10-15 minutes. It did get a tad >> faster to focus but it was still painfully slow. I know it will not be >> as snappy as my Nikon 70-200 f2,9 VR lens, you can barely hear >> anything and it locks on faster than Mike Johnson deleting a cat >> photo. >> >> So, am i missing something with this SDM system. Is it painfully slow >> or should it be as fast or faster to AF on a subject as the screw >> focus lenses. Do i need to adjust a menu setting or something. >> >> Another is on order for Saturday >> >> Dave > > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 17-70 f4 and SDM motor question
Hi David - I just tested my 17-70 @ 50mm indoors in dim light on a K-3. I tried counting off the seconds "one-thousand-one..." but never got beyond "thous" usually stopped a "one..." I can try it on a K-5 tonight, but mine is very fast. And quiet. Mark On 3/19/2014 6:17 PM, David J Brooks wrote: Hi all I went to pick up above mentioned lens this afternoon. loks and feel nice on the K-5, however me thinks there is a problem. I know the AF of Canon and Nikon are quite fast leaving us Pentaxians hunting and pecking our way through landscapes and soccer photos, BUT, 2-3 seconds to lock on and focus on a static object.?? Me thinks that's a bit to slow. The salesman and i played with it for 10-15 minutes. It did get a tad faster to focus but it was still painfully slow. I know it will not be as snappy as my Nikon 70-200 f2,9 VR lens, you can barely hear anything and it locks on faster than Mike Johnson deleting a cat photo. So, am i missing something with this SDM system. Is it painfully slow or should it be as fast or faster to AF on a subject as the screw focus lenses. Do i need to adjust a menu setting or something. Another is on order for Saturday Dave -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 17-70 f4 and SDM motor question
Yes a Henrys in Markham. They had 1 camera and 2 lenses, thats it. On Wed, Mar 19, 2014 at 7:56 PM, Bruce Walker wrote: > It's a Henry's isn't it? My K-3 came from the unfashionable Brampton > store where they had one counter-width devoted to Pentax. Quite well > represented, I thought. > > > On Wed, Mar 19, 2014 at 7:39 PM, David J Brooks wrote: >> Not even sure this store stocks Pentax cameras, i'll find out Sat >> >> On Wed, Mar 19, 2014 at 7:05 PM, Bruce Walker wrote: >>> One last thought: make sure you clean the mount contacts really >>> thoroughly. And did you try it on another camera body besides your >>> own? >>> >>> >>> On Wed, Mar 19, 2014 at 6:58 PM, David J Brooks wrote: >>>> Inside and outside. Inside 2 may be 3 seconds to get in focus. out >>>> side 1-2 seconds >>>> Another is on order for Sat if its still the same i'll get them to >>>> order me the Sigma 17-70 2.8-4 the PF review is good >>>> Even sales man said its to slow >>>> >>>> >>>> Dave >>>> >>>> On Wed, Mar 19, 2014 at 6:53 PM, Bruce Walker >>>> wrote: >>>>> What kind of light was illuminating your subject? How contrasty was it? >>>>> >>>>> Try AF outdoors. >>>>> >>>>> When working correctly on the K20D, SDM can focus in something like >>>>> 0.2 seconds. But in reduced light you can count on many seconds -- >>>>> while the smile fades from your portrait subject ... >>>>> >>>>> This all improves quite noticeably on the K-3. But really low light >>>>> still causes problems that I solve by switching to MF. >>>>> >>>>> >>>>> On Wed, Mar 19, 2014 at 6:43 PM, David J Brooks >>>>> wrote: >>>>>> Could be, i mostly tried it at 650-70 length. It was and i', m not >>>>>> exagerating at least 2-3 if not more seconds to focus. You could see >>>>>> it in th efinder getting closer and closer and hey there ist in focus. >>>>>> Not sure i want something i need to just hold and hope. >>>>>> >>>>>> Dave >>>>>> >>>>>> On Wed, Mar 19, 2014 at 6:31 PM, Dario Bonazza >>>>>> wrote: >>>>>>> Well, the DA* 50-135mm SDM is probably the slowest AF lens on Earth, >>>>>>> gaining >>>>>>> it the nickname of "the sloth". Generally speaking, SDM lenses are >>>>>>> slower >>>>>>> than both screw-driven ad DC Pentax AF lenses, so the DA 17-70mm is a >>>>>>> good >>>>>>> candidate for being another slow-AF lens. However, I own it and I don't >>>>>>> find >>>>>>> it THAT slow as you pointed out. >>>>>>> There is however another problem I saw on several samples of that lens >>>>>>> and >>>>>>> is the almost impossibility to autofocus above 50mm focal length, >>>>>>> hunting >>>>>>> forever while you try & find the focus. Perhaps that's the problem you >>>>>>> spotted. >>>>>>> >>>>>>> Dario >>>>>>> >>>>>>> -Messaggio originale- From: David J Brooks >>>>>>> Sent: Wednesday, March 19, 2014 11:17 PM >>>>>>> To: Pentax Discuss >>>>>>> Subject: Pentax 17-70 f4 and SDM motor question >>>>>>> >>>>>>> >>>>>>> Hi all >>>>>>> >>>>>>> I went to pick up above mentioned lens this afternoon. loks and feel >>>>>>> nice on the K-5, however me thinks there is a problem. >>>>>>> I know the AF of Canon and Nikon are quite fast leaving us Pentaxians >>>>>>> hunting and pecking our way through landscapes and soccer photos, BUT, >>>>>>> 2-3 seconds to lock on and focus on a static object.?? Me thinks >>>>>>> that's a bit to slow. >>>>>>> The salesman and i played with it for 10-15 minutes. It did get a tad >>>>>>> faster to focus but it was still painfully slow. I know it will not be >>>>>>> as snappy as my Nikon 70-200 f2,9 VR lens, you can barely hear >>>>>>> anything and it loc
Re: Pentax 17-70 f4 and SDM motor question
Without a side by side comparison I wouldn't say my 16-50 mm f2.8 D* is significantly slower than any of my screw drive lenses. Seems noticeably faster - and definitely quieter. Kenneth Waller http://www.pentaxphotogallery.com/kennethwaller - Original Message - From: "Dario Bonazza" Subject: Re: Pentax 17-70 f4 and SDM motor question Well, the DA* 50-135mm SDM is probably the slowest AF lens on Earth, gaining it the nickname of "the sloth". Generally speaking, SDM lenses are slower than both screw-driven ad DC Pentax AF lenses, so the DA 17-70mm is a good candidate for being another slow-AF lens. However, I own it and I don't find it THAT slow as you pointed out. There is however another problem I saw on several samples of that lens and is the almost impossibility to autofocus above 50mm focal length, hunting forever while you try & find the focus. Perhaps that's the problem you spotted. Dario -Messaggio originale- From: David J Brooks Sent: Wednesday, March 19, 2014 11:17 PM To: Pentax Discuss Subject: Pentax 17-70 f4 and SDM motor question Hi all I went to pick up above mentioned lens this afternoon. loks and feel nice on the K-5, however me thinks there is a problem. I know the AF of Canon and Nikon are quite fast leaving us Pentaxians hunting and pecking our way through landscapes and soccer photos, BUT, 2-3 seconds to lock on and focus on a static object.?? Me thinks that's a bit to slow. The salesman and i played with it for 10-15 minutes. It did get a tad faster to focus but it was still painfully slow. I know it will not be as snappy as my Nikon 70-200 f2,9 VR lens, you can barely hear anything and it locks on faster than Mike Johnson deleting a cat photo. So, am i missing something with this SDM system. Is it painfully slow or should it be as fast or faster to AF on a subject as the screw focus lenses. Do i need to adjust a menu setting or something. Another is on order for Saturday Dave -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 17-70 f4 and SDM motor question
It's a Henry's isn't it? My K-3 came from the unfashionable Brampton store where they had one counter-width devoted to Pentax. Quite well represented, I thought. On Wed, Mar 19, 2014 at 7:39 PM, David J Brooks wrote: > Not even sure this store stocks Pentax cameras, i'll find out Sat > > On Wed, Mar 19, 2014 at 7:05 PM, Bruce Walker wrote: >> One last thought: make sure you clean the mount contacts really >> thoroughly. And did you try it on another camera body besides your >> own? >> >> >> On Wed, Mar 19, 2014 at 6:58 PM, David J Brooks wrote: >>> Inside and outside. Inside 2 may be 3 seconds to get in focus. out >>> side 1-2 seconds >>> Another is on order for Sat if its still the same i'll get them to >>> order me the Sigma 17-70 2.8-4 the PF review is good >>> Even sales man said its to slow >>> >>> >>> Dave >>> >>> On Wed, Mar 19, 2014 at 6:53 PM, Bruce Walker >>> wrote: >>>> What kind of light was illuminating your subject? How contrasty was it? >>>> >>>> Try AF outdoors. >>>> >>>> When working correctly on the K20D, SDM can focus in something like >>>> 0.2 seconds. But in reduced light you can count on many seconds -- >>>> while the smile fades from your portrait subject ... >>>> >>>> This all improves quite noticeably on the K-3. But really low light >>>> still causes problems that I solve by switching to MF. >>>> >>>> >>>> On Wed, Mar 19, 2014 at 6:43 PM, David J Brooks >>>> wrote: >>>>> Could be, i mostly tried it at 650-70 length. It was and i', m not >>>>> exagerating at least 2-3 if not more seconds to focus. You could see >>>>> it in th efinder getting closer and closer and hey there ist in focus. >>>>> Not sure i want something i need to just hold and hope. >>>>> >>>>> Dave >>>>> >>>>> On Wed, Mar 19, 2014 at 6:31 PM, Dario Bonazza >>>>> wrote: >>>>>> Well, the DA* 50-135mm SDM is probably the slowest AF lens on Earth, >>>>>> gaining >>>>>> it the nickname of "the sloth". Generally speaking, SDM lenses are slower >>>>>> than both screw-driven ad DC Pentax AF lenses, so the DA 17-70mm is a >>>>>> good >>>>>> candidate for being another slow-AF lens. However, I own it and I don't >>>>>> find >>>>>> it THAT slow as you pointed out. >>>>>> There is however another problem I saw on several samples of that lens >>>>>> and >>>>>> is the almost impossibility to autofocus above 50mm focal length, hunting >>>>>> forever while you try & find the focus. Perhaps that's the problem you >>>>>> spotted. >>>>>> >>>>>> Dario >>>>>> >>>>>> -Messaggio originale- From: David J Brooks >>>>>> Sent: Wednesday, March 19, 2014 11:17 PM >>>>>> To: Pentax Discuss >>>>>> Subject: Pentax 17-70 f4 and SDM motor question >>>>>> >>>>>> >>>>>> Hi all >>>>>> >>>>>> I went to pick up above mentioned lens this afternoon. loks and feel >>>>>> nice on the K-5, however me thinks there is a problem. >>>>>> I know the AF of Canon and Nikon are quite fast leaving us Pentaxians >>>>>> hunting and pecking our way through landscapes and soccer photos, BUT, >>>>>> 2-3 seconds to lock on and focus on a static object.?? Me thinks >>>>>> that's a bit to slow. >>>>>> The salesman and i played with it for 10-15 minutes. It did get a tad >>>>>> faster to focus but it was still painfully slow. I know it will not be >>>>>> as snappy as my Nikon 70-200 f2,9 VR lens, you can barely hear >>>>>> anything and it locks on faster than Mike Johnson deleting a cat >>>>>> photo. >>>>>> >>>>>> So, am i missing something with this SDM system. Is it painfully slow >>>>>> or should it be as fast or faster to AF on a subject as the screw >>>>>> focus lenses. Do i need to adjust a menu setting or something. >>>>>> >>>>>> Another is on order for Saturday >>>>>> >>>&
Re: Pentax 17-70 f4 and SDM motor question
Thanks Paul. I d be happy if it focused as well as my 50-200 which is not like the 70-200 Nikon but its fast enough for me. This copy was so slow it would be useless unless doing still life's. Dave On Wed, Mar 19, 2014 at 7:23 PM, Paul Stenquist wrote: > The 17-70/4 that Pentax loaned me earlier this year was very fast to lock on > focus with the K-3. Almost instantaneous in good light and quite fast even in > dim light. > Paul > On Mar 19, 2014, at 6:17 PM, David J Brooks wrote: > >> Hi all >> >> I went to pick up above mentioned lens this afternoon. loks and feel >> nice on the K-5, however me thinks there is a problem. >> I know the AF of Canon and Nikon are quite fast leaving us Pentaxians >> hunting and pecking our way through landscapes and soccer photos, BUT, >> 2-3 seconds to lock on and focus on a static object.?? Me thinks >> that's a bit to slow. >> The salesman and i played with it for 10-15 minutes. It did get a tad >> faster to focus but it was still painfully slow. I know it will not be >> as snappy as my Nikon 70-200 f2,9 VR lens, you can barely hear >> anything and it locks on faster than Mike Johnson deleting a cat >> photo. >> >> So, am i missing something with this SDM system. Is it painfully slow >> or should it be as fast or faster to AF on a subject as the screw >> focus lenses. Do i need to adjust a menu setting or something. >> >> Another is on order for Saturday >> >> Dave >> >> -- >> Documenting Life in Rural Ontario. >> www.caughtinmotion.com >> http://brooksinthecountry.blogspot.com/ >> York Region, Ontario, Canada >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 17-70 f4 and SDM motor question
Not even sure this store stocks Pentax cameras, i'll find out Sat On Wed, Mar 19, 2014 at 7:05 PM, Bruce Walker wrote: > One last thought: make sure you clean the mount contacts really > thoroughly. And did you try it on another camera body besides your > own? > > > On Wed, Mar 19, 2014 at 6:58 PM, David J Brooks wrote: >> Inside and outside. Inside 2 may be 3 seconds to get in focus. out >> side 1-2 seconds >> Another is on order for Sat if its still the same i'll get them to >> order me the Sigma 17-70 2.8-4 the PF review is good >> Even sales man said its to slow >> >> >> Dave >> >> On Wed, Mar 19, 2014 at 6:53 PM, Bruce Walker wrote: >>> What kind of light was illuminating your subject? How contrasty was it? >>> >>> Try AF outdoors. >>> >>> When working correctly on the K20D, SDM can focus in something like >>> 0.2 seconds. But in reduced light you can count on many seconds -- >>> while the smile fades from your portrait subject ... >>> >>> This all improves quite noticeably on the K-3. But really low light >>> still causes problems that I solve by switching to MF. >>> >>> >>> On Wed, Mar 19, 2014 at 6:43 PM, David J Brooks wrote: >>>> Could be, i mostly tried it at 650-70 length. It was and i', m not >>>> exagerating at least 2-3 if not more seconds to focus. You could see >>>> it in th efinder getting closer and closer and hey there ist in focus. >>>> Not sure i want something i need to just hold and hope. >>>> >>>> Dave >>>> >>>> On Wed, Mar 19, 2014 at 6:31 PM, Dario Bonazza >>>> wrote: >>>>> Well, the DA* 50-135mm SDM is probably the slowest AF lens on Earth, >>>>> gaining >>>>> it the nickname of "the sloth". Generally speaking, SDM lenses are slower >>>>> than both screw-driven ad DC Pentax AF lenses, so the DA 17-70mm is a good >>>>> candidate for being another slow-AF lens. However, I own it and I don't >>>>> find >>>>> it THAT slow as you pointed out. >>>>> There is however another problem I saw on several samples of that lens and >>>>> is the almost impossibility to autofocus above 50mm focal length, hunting >>>>> forever while you try & find the focus. Perhaps that's the problem you >>>>> spotted. >>>>> >>>>> Dario >>>>> >>>>> -Messaggio originale- From: David J Brooks >>>>> Sent: Wednesday, March 19, 2014 11:17 PM >>>>> To: Pentax Discuss >>>>> Subject: Pentax 17-70 f4 and SDM motor question >>>>> >>>>> >>>>> Hi all >>>>> >>>>> I went to pick up above mentioned lens this afternoon. loks and feel >>>>> nice on the K-5, however me thinks there is a problem. >>>>> I know the AF of Canon and Nikon are quite fast leaving us Pentaxians >>>>> hunting and pecking our way through landscapes and soccer photos, BUT, >>>>> 2-3 seconds to lock on and focus on a static object.?? Me thinks >>>>> that's a bit to slow. >>>>> The salesman and i played with it for 10-15 minutes. It did get a tad >>>>> faster to focus but it was still painfully slow. I know it will not be >>>>> as snappy as my Nikon 70-200 f2,9 VR lens, you can barely hear >>>>> anything and it locks on faster than Mike Johnson deleting a cat >>>>> photo. >>>>> >>>>> So, am i missing something with this SDM system. Is it painfully slow >>>>> or should it be as fast or faster to AF on a subject as the screw >>>>> focus lenses. Do i need to adjust a menu setting or something. >>>>> >>>>> Another is on order for Saturday >>>>> >>>>> Dave >>>>> >>>>> -- >>>>> Documenting Life in Rural Ontario. >>>>> www.caughtinmotion.com >>>>> http://brooksinthecountry.blogspot.com/ >>>>> York Region, Ontario, Canada >>>>> >>>>> -- >>>>> PDML Pentax-Discuss Mail List >>>>> PDML@pdml.net >>>>> http://pdml.net/mailman/listinfo/pdml_pdml.net >>>>> to UNSUBSCRIBE from the PDML, please visit the link directly above and >>>>> follow the directions. >>>>> >>>>> >>>>&g
Re: Pentax 17-70 f4 and SDM motor question
The 17-70/4 that Pentax loaned me earlier this year was very fast to lock on focus with the K-3. Almost instantaneous in good light and quite fast even in dim light. Paul On Mar 19, 2014, at 6:17 PM, David J Brooks wrote: > Hi all > > I went to pick up above mentioned lens this afternoon. loks and feel > nice on the K-5, however me thinks there is a problem. > I know the AF of Canon and Nikon are quite fast leaving us Pentaxians > hunting and pecking our way through landscapes and soccer photos, BUT, > 2-3 seconds to lock on and focus on a static object.?? Me thinks > that's a bit to slow. > The salesman and i played with it for 10-15 minutes. It did get a tad > faster to focus but it was still painfully slow. I know it will not be > as snappy as my Nikon 70-200 f2,9 VR lens, you can barely hear > anything and it locks on faster than Mike Johnson deleting a cat > photo. > > So, am i missing something with this SDM system. Is it painfully slow > or should it be as fast or faster to AF on a subject as the screw > focus lenses. Do i need to adjust a menu setting or something. > > Another is on order for Saturday > > Dave > > -- > Documenting Life in Rural Ontario. > www.caughtinmotion.com > http://brooksinthecountry.blogspot.com/ > York Region, Ontario, Canada > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 17-70 f4 and SDM motor question
One last thought: make sure you clean the mount contacts really thoroughly. And did you try it on another camera body besides your own? On Wed, Mar 19, 2014 at 6:58 PM, David J Brooks wrote: > Inside and outside. Inside 2 may be 3 seconds to get in focus. out > side 1-2 seconds > Another is on order for Sat if its still the same i'll get them to > order me the Sigma 17-70 2.8-4 the PF review is good > Even sales man said its to slow > > > Dave > > On Wed, Mar 19, 2014 at 6:53 PM, Bruce Walker wrote: >> What kind of light was illuminating your subject? How contrasty was it? >> >> Try AF outdoors. >> >> When working correctly on the K20D, SDM can focus in something like >> 0.2 seconds. But in reduced light you can count on many seconds -- >> while the smile fades from your portrait subject ... >> >> This all improves quite noticeably on the K-3. But really low light >> still causes problems that I solve by switching to MF. >> >> >> On Wed, Mar 19, 2014 at 6:43 PM, David J Brooks wrote: >>> Could be, i mostly tried it at 650-70 length. It was and i', m not >>> exagerating at least 2-3 if not more seconds to focus. You could see >>> it in th efinder getting closer and closer and hey there ist in focus. >>> Not sure i want something i need to just hold and hope. >>> >>> Dave >>> >>> On Wed, Mar 19, 2014 at 6:31 PM, Dario Bonazza >>> wrote: >>>> Well, the DA* 50-135mm SDM is probably the slowest AF lens on Earth, >>>> gaining >>>> it the nickname of "the sloth". Generally speaking, SDM lenses are slower >>>> than both screw-driven ad DC Pentax AF lenses, so the DA 17-70mm is a good >>>> candidate for being another slow-AF lens. However, I own it and I don't >>>> find >>>> it THAT slow as you pointed out. >>>> There is however another problem I saw on several samples of that lens and >>>> is the almost impossibility to autofocus above 50mm focal length, hunting >>>> forever while you try & find the focus. Perhaps that's the problem you >>>> spotted. >>>> >>>> Dario >>>> >>>> -Messaggio originale- From: David J Brooks >>>> Sent: Wednesday, March 19, 2014 11:17 PM >>>> To: Pentax Discuss >>>> Subject: Pentax 17-70 f4 and SDM motor question >>>> >>>> >>>> Hi all >>>> >>>> I went to pick up above mentioned lens this afternoon. loks and feel >>>> nice on the K-5, however me thinks there is a problem. >>>> I know the AF of Canon and Nikon are quite fast leaving us Pentaxians >>>> hunting and pecking our way through landscapes and soccer photos, BUT, >>>> 2-3 seconds to lock on and focus on a static object.?? Me thinks >>>> that's a bit to slow. >>>> The salesman and i played with it for 10-15 minutes. It did get a tad >>>> faster to focus but it was still painfully slow. I know it will not be >>>> as snappy as my Nikon 70-200 f2,9 VR lens, you can barely hear >>>> anything and it locks on faster than Mike Johnson deleting a cat >>>> photo. >>>> >>>> So, am i missing something with this SDM system. Is it painfully slow >>>> or should it be as fast or faster to AF on a subject as the screw >>>> focus lenses. Do i need to adjust a menu setting or something. >>>> >>>> Another is on order for Saturday >>>> >>>> Dave >>>> >>>> -- >>>> Documenting Life in Rural Ontario. >>>> www.caughtinmotion.com >>>> http://brooksinthecountry.blogspot.com/ >>>> York Region, Ontario, Canada >>>> >>>> -- >>>> PDML Pentax-Discuss Mail List >>>> PDML@pdml.net >>>> http://pdml.net/mailman/listinfo/pdml_pdml.net >>>> to UNSUBSCRIBE from the PDML, please visit the link directly above and >>>> follow the directions. >>>> >>>> >>>> - >>>> Nessun virus nel messaggio. >>>> Controllato da AVG - www.avg.com >>>> Versione: 2013.0.3462 / Database dei virus: 3722/7216 - Data di rilascio: >>>> 19/03/2014 >>>> >>>> -- >>>> PDML Pentax-Discuss Mail List >>>> PDML@pdml.net >>>> http://pdml.net/mailman/listinfo/pdml_pdml.net >>>> to UNSUBSCRIBE from the PDML, please visit the link directly above and >>>> follo
Re: Pentax 17-70 f4 and SDM motor question
Inside and outside. Inside 2 may be 3 seconds to get in focus. out side 1-2 seconds Another is on order for Sat if its still the same i'll get them to order me the Sigma 17-70 2.8-4 the PF review is good Even sales man said its to slow Dave On Wed, Mar 19, 2014 at 6:53 PM, Bruce Walker wrote: > What kind of light was illuminating your subject? How contrasty was it? > > Try AF outdoors. > > When working correctly on the K20D, SDM can focus in something like > 0.2 seconds. But in reduced light you can count on many seconds -- > while the smile fades from your portrait subject ... > > This all improves quite noticeably on the K-3. But really low light > still causes problems that I solve by switching to MF. > > > On Wed, Mar 19, 2014 at 6:43 PM, David J Brooks wrote: >> Could be, i mostly tried it at 650-70 length. It was and i', m not >> exagerating at least 2-3 if not more seconds to focus. You could see >> it in th efinder getting closer and closer and hey there ist in focus. >> Not sure i want something i need to just hold and hope. >> >> Dave >> >> On Wed, Mar 19, 2014 at 6:31 PM, Dario Bonazza >> wrote: >>> Well, the DA* 50-135mm SDM is probably the slowest AF lens on Earth, gaining >>> it the nickname of "the sloth". Generally speaking, SDM lenses are slower >>> than both screw-driven ad DC Pentax AF lenses, so the DA 17-70mm is a good >>> candidate for being another slow-AF lens. However, I own it and I don't find >>> it THAT slow as you pointed out. >>> There is however another problem I saw on several samples of that lens and >>> is the almost impossibility to autofocus above 50mm focal length, hunting >>> forever while you try & find the focus. Perhaps that's the problem you >>> spotted. >>> >>> Dario >>> >>> -Messaggio originale- From: David J Brooks >>> Sent: Wednesday, March 19, 2014 11:17 PM >>> To: Pentax Discuss >>> Subject: Pentax 17-70 f4 and SDM motor question >>> >>> >>> Hi all >>> >>> I went to pick up above mentioned lens this afternoon. loks and feel >>> nice on the K-5, however me thinks there is a problem. >>> I know the AF of Canon and Nikon are quite fast leaving us Pentaxians >>> hunting and pecking our way through landscapes and soccer photos, BUT, >>> 2-3 seconds to lock on and focus on a static object.?? Me thinks >>> that's a bit to slow. >>> The salesman and i played with it for 10-15 minutes. It did get a tad >>> faster to focus but it was still painfully slow. I know it will not be >>> as snappy as my Nikon 70-200 f2,9 VR lens, you can barely hear >>> anything and it locks on faster than Mike Johnson deleting a cat >>> photo. >>> >>> So, am i missing something with this SDM system. Is it painfully slow >>> or should it be as fast or faster to AF on a subject as the screw >>> focus lenses. Do i need to adjust a menu setting or something. >>> >>> Another is on order for Saturday >>> >>> Dave >>> >>> -- >>> Documenting Life in Rural Ontario. >>> www.caughtinmotion.com >>> http://brooksinthecountry.blogspot.com/ >>> York Region, Ontario, Canada >>> >>> -- >>> PDML Pentax-Discuss Mail List >>> PDML@pdml.net >>> http://pdml.net/mailman/listinfo/pdml_pdml.net >>> to UNSUBSCRIBE from the PDML, please visit the link directly above and >>> follow the directions. >>> >>> >>> - >>> Nessun virus nel messaggio. >>> Controllato da AVG - www.avg.com >>> Versione: 2013.0.3462 / Database dei virus: 3722/7216 - Data di rilascio: >>> 19/03/2014 >>> >>> -- >>> PDML Pentax-Discuss Mail List >>> PDML@pdml.net >>> http://pdml.net/mailman/listinfo/pdml_pdml.net >>> to UNSUBSCRIBE from the PDML, please visit the link directly above and >>> follow the directions. >> >> >> >> -- >> Documenting Life in Rural Ontario. >> www.caughtinmotion.com >> http://brooksinthecountry.blogspot.com/ >> York Region, Ontario, Canada >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. > > > > -- > -bmw > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 17-70 f4 and SDM motor question
What kind of light was illuminating your subject? How contrasty was it? Try AF outdoors. When working correctly on the K20D, SDM can focus in something like 0.2 seconds. But in reduced light you can count on many seconds -- while the smile fades from your portrait subject ... This all improves quite noticeably on the K-3. But really low light still causes problems that I solve by switching to MF. On Wed, Mar 19, 2014 at 6:43 PM, David J Brooks wrote: > Could be, i mostly tried it at 650-70 length. It was and i', m not > exagerating at least 2-3 if not more seconds to focus. You could see > it in th efinder getting closer and closer and hey there ist in focus. > Not sure i want something i need to just hold and hope. > > Dave > > On Wed, Mar 19, 2014 at 6:31 PM, Dario Bonazza > wrote: >> Well, the DA* 50-135mm SDM is probably the slowest AF lens on Earth, gaining >> it the nickname of "the sloth". Generally speaking, SDM lenses are slower >> than both screw-driven ad DC Pentax AF lenses, so the DA 17-70mm is a good >> candidate for being another slow-AF lens. However, I own it and I don't find >> it THAT slow as you pointed out. >> There is however another problem I saw on several samples of that lens and >> is the almost impossibility to autofocus above 50mm focal length, hunting >> forever while you try & find the focus. Perhaps that's the problem you >> spotted. >> >> Dario >> >> -----Messaggio originale- From: David J Brooks >> Sent: Wednesday, March 19, 2014 11:17 PM >> To: Pentax Discuss >> Subject: Pentax 17-70 f4 and SDM motor question >> >> >> Hi all >> >> I went to pick up above mentioned lens this afternoon. loks and feel >> nice on the K-5, however me thinks there is a problem. >> I know the AF of Canon and Nikon are quite fast leaving us Pentaxians >> hunting and pecking our way through landscapes and soccer photos, BUT, >> 2-3 seconds to lock on and focus on a static object.?? Me thinks >> that's a bit to slow. >> The salesman and i played with it for 10-15 minutes. It did get a tad >> faster to focus but it was still painfully slow. I know it will not be >> as snappy as my Nikon 70-200 f2,9 VR lens, you can barely hear >> anything and it locks on faster than Mike Johnson deleting a cat >> photo. >> >> So, am i missing something with this SDM system. Is it painfully slow >> or should it be as fast or faster to AF on a subject as the screw >> focus lenses. Do i need to adjust a menu setting or something. >> >> Another is on order for Saturday >> >> Dave >> >> -- >> Documenting Life in Rural Ontario. >> www.caughtinmotion.com >> http://brooksinthecountry.blogspot.com/ >> York Region, Ontario, Canada >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. >> >> >> - >> Nessun virus nel messaggio. >> Controllato da AVG - www.avg.com >> Versione: 2013.0.3462 / Database dei virus: 3722/7216 - Data di rilascio: >> 19/03/2014 >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. > > > > -- > Documenting Life in Rural Ontario. > www.caughtinmotion.com > http://brooksinthecountry.blogspot.com/ > York Region, Ontario, Canada > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- -bmw -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 17-70 f4 and SDM motor question
Could be, i mostly tried it at 650-70 length. It was and i', m not exagerating at least 2-3 if not more seconds to focus. You could see it in th efinder getting closer and closer and hey there ist in focus. Not sure i want something i need to just hold and hope. Dave On Wed, Mar 19, 2014 at 6:31 PM, Dario Bonazza wrote: > Well, the DA* 50-135mm SDM is probably the slowest AF lens on Earth, gaining > it the nickname of "the sloth". Generally speaking, SDM lenses are slower > than both screw-driven ad DC Pentax AF lenses, so the DA 17-70mm is a good > candidate for being another slow-AF lens. However, I own it and I don't find > it THAT slow as you pointed out. > There is however another problem I saw on several samples of that lens and > is the almost impossibility to autofocus above 50mm focal length, hunting > forever while you try & find the focus. Perhaps that's the problem you > spotted. > > Dario > > -Messaggio originale- From: David J Brooks > Sent: Wednesday, March 19, 2014 11:17 PM > To: Pentax Discuss > Subject: Pentax 17-70 f4 and SDM motor question > > > Hi all > > I went to pick up above mentioned lens this afternoon. loks and feel > nice on the K-5, however me thinks there is a problem. > I know the AF of Canon and Nikon are quite fast leaving us Pentaxians > hunting and pecking our way through landscapes and soccer photos, BUT, > 2-3 seconds to lock on and focus on a static object.?? Me thinks > that's a bit to slow. > The salesman and i played with it for 10-15 minutes. It did get a tad > faster to focus but it was still painfully slow. I know it will not be > as snappy as my Nikon 70-200 f2,9 VR lens, you can barely hear > anything and it locks on faster than Mike Johnson deleting a cat > photo. > > So, am i missing something with this SDM system. Is it painfully slow > or should it be as fast or faster to AF on a subject as the screw > focus lenses. Do i need to adjust a menu setting or something. > > Another is on order for Saturday > > Dave > > -- > Documenting Life in Rural Ontario. > www.caughtinmotion.com > http://brooksinthecountry.blogspot.com/ > York Region, Ontario, Canada > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. > > > - > Nessun virus nel messaggio. > Controllato da AVG - www.avg.com > Versione: 2013.0.3462 / Database dei virus: 3722/7216 - Data di rilascio: > 19/03/2014 > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax 17-70 f4 and SDM motor question
Well, the DA* 50-135mm SDM is probably the slowest AF lens on Earth, gaining it the nickname of "the sloth". Generally speaking, SDM lenses are slower than both screw-driven ad DC Pentax AF lenses, so the DA 17-70mm is a good candidate for being another slow-AF lens. However, I own it and I don't find it THAT slow as you pointed out. There is however another problem I saw on several samples of that lens and is the almost impossibility to autofocus above 50mm focal length, hunting forever while you try & find the focus. Perhaps that's the problem you spotted. Dario -Messaggio originale- From: David J Brooks Sent: Wednesday, March 19, 2014 11:17 PM To: Pentax Discuss Subject: Pentax 17-70 f4 and SDM motor question Hi all I went to pick up above mentioned lens this afternoon. loks and feel nice on the K-5, however me thinks there is a problem. I know the AF of Canon and Nikon are quite fast leaving us Pentaxians hunting and pecking our way through landscapes and soccer photos, BUT, 2-3 seconds to lock on and focus on a static object.?? Me thinks that's a bit to slow. The salesman and i played with it for 10-15 minutes. It did get a tad faster to focus but it was still painfully slow. I know it will not be as snappy as my Nikon 70-200 f2,9 VR lens, you can barely hear anything and it locks on faster than Mike Johnson deleting a cat photo. So, am i missing something with this SDM system. Is it painfully slow or should it be as fast or faster to AF on a subject as the screw focus lenses. Do i need to adjust a menu setting or something. Another is on order for Saturday Dave -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. - Nessun virus nel messaggio. Controllato da AVG - www.avg.com Versione: 2013.0.3462 / Database dei virus: 3722/7216 - Data di rilascio: 19/03/2014 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Pentax 17-70 f4 and SDM motor question
Hi all I went to pick up above mentioned lens this afternoon. loks and feel nice on the K-5, however me thinks there is a problem. I know the AF of Canon and Nikon are quite fast leaving us Pentaxians hunting and pecking our way through landscapes and soccer photos, BUT, 2-3 seconds to lock on and focus on a static object.?? Me thinks that's a bit to slow. The salesman and i played with it for 10-15 minutes. It did get a tad faster to focus but it was still painfully slow. I know it will not be as snappy as my Nikon 70-200 f2,9 VR lens, you can barely hear anything and it locks on faster than Mike Johnson deleting a cat photo. So, am i missing something with this SDM system. Is it painfully slow or should it be as fast or faster to AF on a subject as the screw focus lenses. Do i need to adjust a menu setting or something. Another is on order for Saturday Dave -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
