Re: k-5 autofocus fine adjustment
From: David J Brooks On Sat, Nov 6, 2010 at 9:42 PM, paul stenquist wrote: I adjusted the camera for all six of my autofocus lenses this morning. i did it with the target I've used before. Is this available somewhere.?? Dave These are available: http://www.k10dbook.com/newchart.pdf Instructions: http://pentaxdslrs.blogspot.com/2008/06/part-1-autofocus-adjustment-for-pentax.html http://pentaxdslrs.blogspot.com/2008/06/part-2-autofocus-adjustment-for-pentax.html -- 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: k-5 autofocus fine adjustment
On Sun, Nov 7, 2010 at 10:20 AM, P N Stenquist wrote: > I might build something like that. But the > target on the floor works. Great, now i have to build a floor. Dave > Paul > On Nov 7, 2010, at 7:03 AM, David J Brooks wrote: > >> On Sat, Nov 6, 2010 at 9:42 PM, paul stenquist >> wrote: >>> >>> I adjusted the camera for all six of my autofocus lenses this morning. i >>> did it with the target I've used before. >> >> Is this available somewhere.?? >> >> Dave >> >> >> >> >> >>> Paul >>> -- >>> 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. > > > -- > 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: k-5 autofocus fine adjustment
Kenneth Waller http://www.pentaxphotogallery.com/kennethwaller - Original Message - From: "paul stenquist" Subject: Re: k-5 autofocus fine adjustment On Nov 7, 2010, at 5:19 PM, Ken Waller wrote: Kenneth Waller http://www.pentaxphotogallery.com/kennethwaller - Original Message - From: "paul stenquist" Subject: Re: k-5 autofocus fine adjustment My autofocus wouldn't seem to have any front/rear autofocus problems either. Those plus or minus two or >three click adjustments are extremely small changes and aren't apparent in the focusing screen. So the evaluation was done on your monitor ? Yes. At 100%. I think that's the only way to do it accurately. My thoughts also. But fine adjustment is worth the effort. I don't think any autofocus system is spot on with all lenses from the >factory. The variation is generally in the lens construction, and I suspect that lenses change a bit over time >with wear and settling of parts. I wouldn't use a new camera for serious business without first calibrating the >autofocus. Paul On Nov 7, 2010, at 1:29 AM, Boris Liberman wrote: Fascinating, Paul. Except just one lens, the seller of which forewarned me of necessity to align focus, all my >lenses and cameras are spot on in AF department. I did not perform any calibration or scientific (semi->scientific, quarter-scientific?!) tests, but judging from rather accurate (in case of K-7 even properly shimmed >and calibrated by testing) Katz Eye screen, my gear doesn't have any front/back focus problems whatsoever. >Curious, really. Clarification: I am talking about center AF point. Boris On 11/7/2010 3:42 AM, paul stenquist wrote: I adjusted the camera for all six of my autofocus lenses this morning. i did it with the target I've used before. The moire method sounded even more difficult and time consuming. In any case, five of the six came in at 2 or 3 clicks in one direction or the other. None were dead on at zero. That's less deviation than I saw with most of my other Pentax DSLRs. Similar to what I saw with the K-7. One lense, the FA 35/2 required a + 10 adjustment. I believe the K-7 number for that lens was way up there as bell. I'll have to have a look. I double and triple checked most of them. Checked zooms at full zoom and half way. If there was a discrepancy, I leaned toward getting it right at the longer focal length, since DOF is reduced. I'm now happily dialed in. Paul -- 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: k-5 autofocus fine adjustment
On Nov 7, 2010, at 5:19 PM, Ken Waller wrote: > > Kenneth Waller > http://www.pentaxphotogallery.com/kennethwaller > > - Original Message - From: "paul stenquist" > Subject: Re: k-5 autofocus fine adjustment > > >> My autofocus wouldn't seem to have any front/rear autofocus problems either. >> Those plus or minus two or >three click adjustments are extremely small >> changes and aren't apparent in the focusing screen. > > So the evaluation was done on your monitor ? Yes. At 100%. I think that's the only way to do it accurately. > >> But fine adjustment is worth the effort. I don't think any autofocus system >> is spot on with all lenses from the >factory. The variation is generally in >> the lens construction, and I suspect that lenses change a bit over time >> >with wear and settling of parts. I wouldn't use a new camera for serious >> business without first calibrating the >autofocus. >>> Paul >>> On Nov 7, 2010, at 1:29 AM, Boris Liberman wrote: >>> >>>> Fascinating, Paul. Except just one lens, the seller of which forewarned me >>>> of necessity to align focus, all my >lenses and cameras are spot on in AF >>>> department. I did not perform any calibration or scientific >>>> (semi->scientific, quarter-scientific?!) tests, but judging from rather >>>> accurate (in case of K-7 even properly shimmed >and calibrated by testing) >>>> Katz Eye screen, my gear doesn't have any front/back focus problems >>>> whatsoever. >Curious, really. >>>> >>> Clarification: I am talking about center AF point. >>> >>> Boris >>> >>> >>> >>> On 11/7/2010 3:42 AM, paul stenquist wrote: >>>> I adjusted the camera for all six of my autofocus lenses this >>>> morning. i did it with the target I've used before. The moire method >>>> sounded even more difficult and time consuming. In any case, five of >>>> the six came in at 2 or 3 clicks in one direction or the other. None >>>> were dead on at zero. That's less deviation than I saw with most of >>>> my other Pentax DSLRs. Similar to what I saw with the K-7. One lense, >>>> the FA 35/2 required a + 10 adjustment. I believe the K-7 number for >>>> that lens was way up there as bell. I'll have to have a look. I >>>> double and triple checked most of them. Checked zooms at full zoom >>>> and half way. If there was a discrepancy, I leaned toward getting it >>>> right at the longer focal length, since DOF is reduced. I'm now >>>> happily dialed in. >>>> >>>> Paul > > > -- > 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: k-5 autofocus fine adjustment
Kenneth Waller http://www.pentaxphotogallery.com/kennethwaller - Original Message - From: "paul stenquist" Subject: Re: k-5 autofocus fine adjustment My autofocus wouldn't seem to have any front/rear autofocus problems either. Those plus or minus two or >three click adjustments are extremely small changes and aren't apparent in the focusing screen. So the evaluation was done on your monitor ? But fine adjustment is worth the effort. I don't think any autofocus system is spot on with all lenses from the >factory. The variation is generally in the lens construction, and I suspect that lenses change a bit over time >with wear and settling of parts. I wouldn't use a new camera for serious business without first calibrating the >autofocus. Paul On Nov 7, 2010, at 1:29 AM, Boris Liberman wrote: Fascinating, Paul. Except just one lens, the seller of which forewarned me of necessity to align focus, all my >lenses and cameras are spot on in AF department. I did not perform any calibration or scientific (semi->scientific, quarter-scientific?!) tests, but judging from rather accurate (in case of K-7 even properly shimmed >and calibrated by testing) Katz Eye screen, my gear doesn't have any front/back focus problems whatsoever. >Curious, really. Clarification: I am talking about center AF point. Boris On 11/7/2010 3:42 AM, paul stenquist wrote: I adjusted the camera for all six of my autofocus lenses this morning. i did it with the target I've used before. The moire method sounded even more difficult and time consuming. In any case, five of the six came in at 2 or 3 clicks in one direction or the other. None were dead on at zero. That's less deviation than I saw with most of my other Pentax DSLRs. Similar to what I saw with the K-7. One lense, the FA 35/2 required a + 10 adjustment. I believe the K-7 number for that lens was way up there as bell. I'll have to have a look. I double and triple checked most of them. Checked zooms at full zoom and half way. If there was a discrepancy, I leaned toward getting it right at the longer focal length, since DOF is reduced. I'm now happily dialed in. Paul -- 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: k-5 autofocus fine adjustment
Yes. I'll send it to you as a high res jpeg. I made my own. I just shoot it at a 45 degree angle. Target on the floor. Camera on a tripod. There are even better devices available that utilize a scale thats on a 45 degree angle and a vertical target. I might build something like that. But the target on the floor works. Paul On Nov 7, 2010, at 7:03 AM, David J Brooks wrote: On Sat, Nov 6, 2010 at 9:42 PM, paul stenquist > wrote: I adjusted the camera for all six of my autofocus lenses this morning. i did it with the target I've used before. Is this available somewhere.?? Dave Paul -- 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. -- 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: k-5 autofocus fine adjustment
I see... Well, could be my problem with Katz Eye screen was based on the possibility that their screen is of different thickness than that of Pentax... All in all, it is good that your camera is in proper operational order and as I usually do - I am looking forward to your pictures, Paul. Boris P.S. I am younger than you, but my eyesight is not my forte too. On 11/7/2010 5:17 PM, P N Stenquist wrote: I checked manual focus with the 85/1.8 wide open. I achieved good focus on a majority of shots at a target. My eyes are a limiting factor here. I'm old:-). But if the screen is off, it would be by a very small amount. Paul On Nov 7, 2010, at 6:50 AM, Boris Liberman wrote: On 11/7/2010 1:34 PM, paul stenquist wrote: I'm going to check the screen for manual focus. I'll let you know. Paul Thanks, Paul! I think it will prove beneficial for you as well, as even the best electronics may require an occasional human intervention... Boris -- 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: k-5 autofocus fine adjustment
I checked manual focus with the 85/1.8 wide open. I achieved good focus on a majority of shots at a target. My eyes are a limiting factor here. I'm old:-). But if the screen is off, it would be by a very small amount. Paul On Nov 7, 2010, at 6:50 AM, Boris Liberman wrote: On 11/7/2010 1:34 PM, paul stenquist wrote: I'm going to check the screen for manual focus. I'll let you know. Paul Thanks, Paul! I think it will prove beneficial for you as well, as even the best electronics may require an occasional human intervention... Boris -- 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: k-5 autofocus fine adjustment
On Sat, Nov 6, 2010 at 9:42 PM, paul stenquist wrote: > I adjusted the camera for all six of my autofocus lenses this morning. i did > it with the target I've used before. Is this available somewhere.?? Dave > Paul > -- > 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: k-5 autofocus fine adjustment
On Sun, Nov 7, 2010 at 4:24 AM, eckinator wrote: > All I can say is that the DFA 50 that I am looking to sell focuses > like a charm after I took it to Pentax for microfocus adjustment - > they have a machine for that here in ze mosserlant. > Ecke I had Pentax Canada check my K10D with my D FA 50 as well, and they did some sort of adjustment as it is spot on now. They said my camera did not have any BF so i guess it just needed lens adjustments were needed/ Dave > > 2010/11/7 Boris Liberman : >> On 11/7/2010 4:32 AM, Miserere wrote: >>> >>> I'm sure your camera will be fine, but I was curious nontheless. I'm >>> sure Boris will chime in with his tale of woe getting correct manual >>> focus on his K-7. >> >> Boris chiming is. >> >> Based on my experience with K-7, Pentax Israel and Rachael Katz herself, I >> will be very surprised if K-5's screen was properly and accurately aligned >> for precision manual focusing. One of the things that really irks me is that >> even if I were to buy a new camera (K-5? K-3?) say in summer 2011, I'd have >> to go through that bothersome saga one more time. Fine mechanical tuning and >> precision are things of the past, it seems. >> >> Boris chiming out. >> >> >> -- >> 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: k-5 autofocus fine adjustment
On 11/7/2010 1:34 PM, paul stenquist wrote: I'm going to check the screen for manual focus. I'll let you know. Paul Thanks, Paul! I think it will prove beneficial for you as well, as even the best electronics may require an occasional human intervention... Boris -- 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: k-5 autofocus fine adjustment
On Nov 7, 2010, at 1:33 AM, Boris Liberman wrote: > On 11/7/2010 4:32 AM, Miserere wrote: >> I'm sure your camera will be fine, but I was curious nontheless. I'm >> sure Boris will chime in with his tale of woe getting correct manual >> focus on his K-7. > > Boris chiming is. > > Based on my experience with K-7, Pentax Israel and Rachael Katz herself, I > will be very surprised if K-5's screen was properly and accurately aligned > for precision manual focusing. One of the things that really irks me is that > even if I were to buy a new camera (K-5? K-3?) say in summer 2011, I'd have > to go through that bothersome saga one more time. Fine mechanical tuning and > precision are things of the past, it seems. > > Boris chiming out. I'm going to check the screen for manual focus. I'll let you know. Paul > > > -- > 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: k-5 autofocus fine adjustment
My autofocus wouldn't seem to have any front/rear autofocus problems either. Those plus or minus two or three click adjustments are extremely small changes and aren't apparent in the focusing screen. But fine adjustment is worth the effort. I don't think any autofocus system is spot on with all lenses from the factory. The variation is generally in the lens construction, and I suspect that lenses change a bit over time with wear and settling of parts. I wouldn't use a new camera for serious business without first calibrating the autofocus. Paul On Nov 7, 2010, at 1:29 AM, Boris Liberman wrote: > Fascinating, Paul. Except just one lens, the seller of which forewarned me of > necessity to align focus, all my lenses and cameras are spot on in AF > department. I did not perform any calibration or scientific (semi-scientific, > quarter-scientific?!) tests, but judging from rather accurate (in case of K-7 > even properly shimmed and calibrated by testing) Katz Eye screen, my gear > doesn't have any front/back focus problems whatsoever. Curious, really. > > Clarification: I am talking about center AF point. > > Boris > > > > On 11/7/2010 3:42 AM, paul stenquist wrote: >> I adjusted the camera for all six of my autofocus lenses this >> morning. i did it with the target I've used before. The moire method >> sounded even more difficult and time consuming. In any case, five of >> the six came in at 2 or 3 clicks in one direction or the other. None >> were dead on at zero. That's less deviation than I saw with most of >> my other Pentax DSLRs. Similar to what I saw with the K-7. One lense, >> the FA 35/2 required a + 10 adjustment. I believe the K-7 number for >> that lens was way up there as bell. I'll have to have a look. I >> double and triple checked most of them. Checked zooms at full zoom >> and half way. If there was a discrepancy, I leaned toward getting it >> right at the longer focal length, since DOF is reduced. I'm now >> happily dialed in. >> >> Paul > > > -- > 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: k-5 autofocus fine adjustment
All I can say is that the DFA 50 that I am looking to sell focuses like a charm after I took it to Pentax for microfocus adjustment - they have a machine for that here in ze mosserlant. Ecke 2010/11/7 Boris Liberman : > On 11/7/2010 4:32 AM, Miserere wrote: >> >> I'm sure your camera will be fine, but I was curious nontheless. I'm >> sure Boris will chime in with his tale of woe getting correct manual >> focus on his K-7. > > Boris chiming is. > > Based on my experience with K-7, Pentax Israel and Rachael Katz herself, I > will be very surprised if K-5's screen was properly and accurately aligned > for precision manual focusing. One of the things that really irks me is that > even if I were to buy a new camera (K-5? K-3?) say in summer 2011, I'd have > to go through that bothersome saga one more time. Fine mechanical tuning and > precision are things of the past, it seems. > > Boris chiming out. > > > -- > 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: k-5 autofocus fine adjustment
On 11/7/2010 4:32 AM, Miserere wrote: I'm sure your camera will be fine, but I was curious nontheless. I'm sure Boris will chime in with his tale of woe getting correct manual focus on his K-7. Boris chiming is. Based on my experience with K-7, Pentax Israel and Rachael Katz herself, I will be very surprised if K-5's screen was properly and accurately aligned for precision manual focusing. One of the things that really irks me is that even if I were to buy a new camera (K-5? K-3?) say in summer 2011, I'd have to go through that bothersome saga one more time. Fine mechanical tuning and precision are things of the past, it seems. Boris chiming out. -- 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: k-5 autofocus fine adjustment
Fascinating, Paul. Except just one lens, the seller of which forewarned me of necessity to align focus, all my lenses and cameras are spot on in AF department. I did not perform any calibration or scientific (semi-scientific, quarter-scientific?!) tests, but judging from rather accurate (in case of K-7 even properly shimmed and calibrated by testing) Katz Eye screen, my gear doesn't have any front/back focus problems whatsoever. Curious, really. Clarification: I am talking about center AF point. Boris On 11/7/2010 3:42 AM, paul stenquist wrote: I adjusted the camera for all six of my autofocus lenses this morning. i did it with the target I've used before. The moire method sounded even more difficult and time consuming. In any case, five of the six came in at 2 or 3 clicks in one direction or the other. None were dead on at zero. That's less deviation than I saw with most of my other Pentax DSLRs. Similar to what I saw with the K-7. One lense, the FA 35/2 required a + 10 adjustment. I believe the K-7 number for that lens was way up there as bell. I'll have to have a look. I double and triple checked most of them. Checked zooms at full zoom and half way. If there was a discrepancy, I leaned toward getting it right at the longer focal length, since DOF is reduced. I'm now happily dialed in. Paul -- 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: k-5 autofocus fine adjustment
On Nov 6, 2010, at 10:32 PM, Miserere wrote: > On 6 November 2010 22:18, paul stenquist wrote: >> >> On Nov 6, 2010, at 10:02 PM, Miserere wrote: >> >>> On 6 November 2010 21:42, paul stenquist wrote: I adjusted the camera for all six of my autofocus lenses this morning. i did it with the target I've used before. The moire method sounded even more difficult and time consuming. In any case, five of the six came in at 2 or 3 clicks in one direction or the other. None were dead on at zero. That's less deviation than I saw with most of my other Pentax DSLRs. Similar to what I saw with the K-7. One lense, the FA 35/2 required a + 10 adjustment. I believe the K-7 number for that lens was way up there as bell. I'll have to have a look. I double and triple checked most of them. Checked zooms at full zoom and half way. If there was a discrepancy, I leaned toward getting it right at the longer focal length, since DOF is reduced. I'm now happily dialed in. Paul >>> >>> How is the manual focusing? Do you need any shims to sort it out? >>> >>> >> I haven't tried manual focus. I do intend to head out in the woods with my >> A400/5.6 some time soon. And I'll check it for infinity. I suspect it will >> be okay, as it has been with the k-7. The only other manual focus lenses I >> use are a K85/1.8 and a Vivitar S1 90/2.5 macro. Haven't experienced >> problems with any of them on my earlier Pentax DSRs, although I never tested >> them specifically for infinity focus. They're not the kind of lenses one >> normally uses at infinity. >> Paul > > I wasn't worried with infinity so much as with accuracy in general. I > recently had to shim my K10D because AF was spot on but manual focus > back-focused. > > I'm sure your camera will be fine, but I was curious nontheless. I'm > sure Boris will chime in with his tale of woe getting correct manual > focus on his K-7. > > I get it. You're talking about focus screen accuracy. Good question. I think I'll test for it with one lens. The 85/1.8 wide open will work for that. Paul > --M. > -- > > \/\/o/\/\ --> http://WorldOfMiserere.com > > http://EnticingTheLight.com > A Quest for Photographic Enlightenment > > -- > 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: k-5 autofocus fine adjustment
On 6 November 2010 22:18, paul stenquist wrote: > > On Nov 6, 2010, at 10:02 PM, Miserere wrote: > >> On 6 November 2010 21:42, paul stenquist wrote: >>> I adjusted the camera for all six of my autofocus lenses this morning. i >>> did it with the target I've used before. The moire method sounded even more >>> difficult and time consuming. In any case, five of the six came in at 2 or >>> 3 clicks in one direction or the other. None were dead on at zero. That's >>> less deviation than I saw with most of my other Pentax DSLRs. Similar to >>> what I saw with the K-7. One lense, the FA 35/2 required a + 10 adjustment. >>> I believe the K-7 number for that lens was way up there as bell. I'll have >>> to have a look. I double and triple checked most of them. Checked zooms at >>> full zoom and half way. If there was a discrepancy, I leaned toward getting >>> it right at the longer focal length, since DOF is reduced. I'm now happily >>> dialed in. >>> >>> Paul >> >> How is the manual focusing? Do you need any shims to sort it out? >> >> > I haven't tried manual focus. I do intend to head out in the woods with my > A400/5.6 some time soon. And I'll check it for infinity. I suspect it will be > okay, as it has been with the k-7. The only other manual focus lenses I use > are a K85/1.8 and a Vivitar S1 90/2.5 macro. Haven't experienced problems > with any of them on my earlier Pentax DSRs, although I never tested them > specifically for infinity focus. They're not the kind of lenses one normally > uses at infinity. > Paul I wasn't worried with infinity so much as with accuracy in general. I recently had to shim my K10D because AF was spot on but manual focus back-focused. I'm sure your camera will be fine, but I was curious nontheless. I'm sure Boris will chime in with his tale of woe getting correct manual focus on his K-7. --M. -- \/\/o/\/\ --> http://WorldOfMiserere.com http://EnticingTheLight.com A Quest for Photographic Enlightenment -- 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: k-5 autofocus fine adjustment
On Nov 6, 2010, at 10:02 PM, Miserere wrote: > On 6 November 2010 21:42, paul stenquist wrote: >> I adjusted the camera for all six of my autofocus lenses this morning. i did >> it with the target I've used before. The moire method sounded even more >> difficult and time consuming. In any case, five of the six came in at 2 or 3 >> clicks in one direction or the other. None were dead on at zero. That's less >> deviation than I saw with most of my other Pentax DSLRs. Similar to what I >> saw with the K-7. One lense, the FA 35/2 required a + 10 adjustment. I >> believe the K-7 number for that lens was way up there as bell. I'll have to >> have a look. I double and triple checked most of them. Checked zooms at full >> zoom and half way. If there was a discrepancy, I leaned toward getting it >> right at the longer focal length, since DOF is reduced. I'm now happily >> dialed in. >> >> Paul > > How is the manual focusing? Do you need any shims to sort it out? > > I haven't tried manual focus. I do intend to head out in the woods with my A400/5.6 some time soon. And I'll check it for infinity. I suspect it will be okay, as it has been with the k-7. The only other manual focus lenses I use are a K85/1.8 and a Vivitar S1 90/2.5 macro. Haven't experienced problems with any of them on my earlier Pentax DSRs, although I never tested them specifically for infinity focus. They're not the kind of lenses one normally uses at infinity. Paul > --M. > -- > > \/\/o/\/\ --> http://WorldOfMiserere.com > > http://EnticingTheLight.com > A Quest for Photographic Enlightenment > > -- > 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: k-5 autofocus fine adjustment
On 6 November 2010 21:42, paul stenquist wrote: > I adjusted the camera for all six of my autofocus lenses this morning. i did > it with the target I've used before. The moire method sounded even more > difficult and time consuming. In any case, five of the six came in at 2 or 3 > clicks in one direction or the other. None were dead on at zero. That's less > deviation than I saw with most of my other Pentax DSLRs. Similar to what I > saw with the K-7. One lense, the FA 35/2 required a + 10 adjustment. I > believe the K-7 number for that lens was way up there as bell. I'll have to > have a look. I double and triple checked most of them. Checked zooms at full > zoom and half way. If there was a discrepancy, I leaned toward getting it > right at the longer focal length, since DOF is reduced. I'm now happily > dialed in. > > Paul How is the manual focusing? Do you need any shims to sort it out? --M. -- \/\/o/\/\ --> http://WorldOfMiserere.com http://EnticingTheLight.com A Quest for Photographic Enlightenment -- 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.
k-5 autofocus fine adjustment
I adjusted the camera for all six of my autofocus lenses this morning. i did it with the target I've used before. The moire method sounded even more difficult and time consuming. In any case, five of the six came in at 2 or 3 clicks in one direction or the other. None were dead on at zero. That's less deviation than I saw with most of my other Pentax DSLRs. Similar to what I saw with the K-7. One lense, the FA 35/2 required a + 10 adjustment. I believe the K-7 number for that lens was way up there as bell. I'll have to have a look. I double and triple checked most of them. Checked zooms at full zoom and half way. If there was a discrepancy, I leaned toward getting it right at the longer focal length, since DOF is reduced. I'm now happily dialed in. Paul -- 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.
