Re: 1.7 XAF SMC Pentax adapter
On Mon, 6 Feb 2006, Fred wrote: Yes. At f/3.5, it's (barely, by Pentax standards)) just fast enough to autofocus even with the 1.7X's light loss (although in reasonably bright light I've used both the A 28-135/4 and the A 70-210/4 with the 1.7X adapter - mostly for fun, I might add, not for serious shooting). I am thinking mount-stress and going ouch... Kostas
RE: 1.7 XAF SMC Pentax adapter
Well, it's always in my camera bag or on the camera. It r e a l l y is great! Regards Jens Bladt http://www.jensbladt.dk -Oprindelig meddelelse- Fra: Mark Roberts [mailto:[EMAIL PROTECTED] Sendt: 4. februar 2006 13:27 Til: pentax-discuss@pdml.net Emne: Re: 1.7 XAF SMC Pentax adapter "Jens Bladt" <[EMAIL PROTECTED]> wrote: >This is a great tool. Absolutely top quality. I only have good things to say >about this item. Focusing is accurate, the image quality is excellent. It >makes focusing more accurate that MF. It's actually one of the best Pentax >products I have ever bought. It's simply highly recomendable. You will never >regret buying one of these - it's better than any other converter you will >come across. I will never sell mine, no matter how attractive the offer may >be. I can't believe Pentax stoped making this - it is very usefull. Come on Jens, don't be so coy. Tell us what you *really* think about it... -- Mark Roberts Photography and writing www.robertstech.com
Re: 1.7 XAF SMC Pentax adapter
> BTW Jens, the A35-105/3.5 is one of the Pentax recommended lenses > for use with the F1.7x converter! ;-) Yes. At f/3.5, it's (barely, by Pentax standards)) just fast enough to autofocus even with the 1.7X's light loss (although in reasonably bright light I've used both the A 28-135/4 and the A 70-210/4 with the 1.7X adapter - mostly for fun, I might add, not for serious shooting). Fred
RE: 1.7 XAF SMC Pentax adapter
BTW Jens, the A35-105/3.5 is one of the Pentax recommended lenses for use with the F1.7x converter! ;-) Don > -Original Message- > From: Mark Roberts [mailto:[EMAIL PROTECTED] > Sent: Saturday, February 04, 2006 6:27 AM > To: pentax-discuss@pdml.net > Subject: Re: 1.7 XAF SMC Pentax adapter > > > "Jens Bladt" <[EMAIL PROTECTED]> wrote: > > >This is a great tool. Absolutely top quality. I only have good > things to say > >about this item. Focusing is accurate, the image quality is excellent. It > >makes focusing more accurate that MF. It's actually one of the > best Pentax > >products I have ever bought. It's simply highly recomendable. > You will never > >regret buying one of these - it's better than any other > converter you will > >come across. I will never sell mine, no matter how attractive > the offer may > >be. I can't believe Pentax stoped making this - it is very usefull. > > Come on Jens, don't be so coy. Tell us what you *really* think about > it... > > -- > Mark Roberts > Photography and writing > www.robertstech.com >
Re: 1.7 XAF SMC Pentax adapter
"Jens Bladt" <[EMAIL PROTECTED]> wrote: >This is a great tool. Absolutely top quality. I only have good things to say >about this item. Focusing is accurate, the image quality is excellent. It >makes focusing more accurate that MF. It's actually one of the best Pentax >products I have ever bought. It's simply highly recomendable. You will never >regret buying one of these - it's better than any other converter you will >come across. I will never sell mine, no matter how attractive the offer may >be. I can't believe Pentax stoped making this - it is very usefull. Come on Jens, don't be so coy. Tell us what you *really* think about it... -- Mark Roberts Photography and writing www.robertstech.com
Re: 1.7 XAF SMC Pentax adapter
Kostas Kavoussanakis wrote: On Sun, 5 Feb 2006, mike wilson wrote: Kostas Kavoussanakis wrote: The manual states that you may get vignetting if not at infinity. But the T/C does not have a great focussing range (trade-off for speed), so some times you are forced to pre-focus (if approximately). I'm not so sure that it is a tradeoff as much as a need to adhere to optical rules. But, as you imply and nobody else has mentioned specifically, it is very fast at focusing. Ah, misunderstanding, the ambiguity of speed strikes again (though your statement for AF speed is in agreement with my findings). What I meant was that in order to have a wider focus range it would have to be a (say) 2x converter, so as to accommodate more movement. 2x converter=2 stop "loss". Am I right? Kostas Pass. 8-) My take is that, to be of any use without being too large/heavy/whatever, Pentax designed it to have limited range of focus. I'm not sure this would have been influenced by the (nonfocus) speed of the converter. Possibly both factors come into account. In any case, this requires the user to prefocus to somewhere near the intended point. Details are taken care of by the converter, rapidly. My experience is that the 1.7 focuses at least as fast as the 28-70/2.8, probably faster. mike
Re: 1.7 XAF SMC Pentax adapter
On Sun, 5 Feb 2006, mike wilson wrote: Kostas Kavoussanakis wrote: The manual states that you may get vignetting if not at infinity. But the T/C does not have a great focussing range (trade-off for speed), so some times you are forced to pre-focus (if approximately). I'm not so sure that it is a tradeoff as much as a need to adhere to optical rules. But, as you imply and nobody else has mentioned specifically, it is very fast at focusing. Ah, misunderstanding, the ambiguity of speed strikes again (though your statement for AF speed is in agreement with my findings). What I meant was that in order to have a wider focus range it would have to be a (say) 2x converter, so as to accommodate more movement. 2x converter=2 stop "loss". Am I right? Kostas
Re: 1.7 XAF SMC Pentax adapter
Kostas Kavoussanakis wrote: On Sat, 4 Feb 2006, John Whittingham wrote: Would it be preferable to set the lens at infinity or a shorter distance in your opinion. The manual states that you may get vignetting if not at infinity. But the T/C does not have a great focussing range (trade-off for speed), so some times you are forced to pre-focus (if approximately). Kostas I'm not so sure that it is a tradeoff as much as a need to adhere to optical rules. But, as you imply and nobody else has mentioned specifically, it is very fast at focusing. mike
Re: 1.7 XAF SMC Pentax adapter
Just rememeber it will onlt allow center narrow AF even with moder bodies and even if used with AF lenses. -- Thibouille -- *ist-D,Z1,SFXn,SuperA,KX,MX, P30t and KR-10x ...
SV: 1.7 XAF SMC Pentax adapter
I paid 67 GP (118 USD) for mine, including shipping from the UK to Denmark in September 2004. The best spend 100 USD for photographic gear ever, I guess (or at least next to my K 2.5/135mm, for which I paid about the same). Regards Jens Jens Bladt http://www.jensbladt.dk -Oprindelig meddelelse- Fra: David Savage [mailto:[EMAIL PROTECTED] Sendt: 5. februar 2006 02:48 Til: pentax-discuss@pdml.net Emne: Re: 1.7 XAF SMC Pentax adapter On 2/5/06, Kenneth Waller <[EMAIL PROTECTED]> wrote: > I was thinking about specifically using it on my 600mm FA & 300mm FA > > Curious as to what they cost nowadays. I got mine late last year new for AU$185 (approx. US$140). Dave > Kenneth Waller
Re: 1.7 XAF SMC Pentax adapter
On 2/5/06, Kenneth Waller <[EMAIL PROTECTED]> wrote: > I was thinking about specifically using it on my 600mm FA & 300mm FA > > Curious as to what they cost nowadays. I got mine late last year new for AU$185 (approx. US$140). Dave > Kenneth Waller
Re: 1.7 XAF SMC Pentax adapter
On 4 Feb 2006 at 17:42, Jan van Wijk wrote: > Quality seems quite good, can hardly see a difference between > this 1.7 one and the two 1.4x or 2x L converters when used on > the 300mm (and 510mm f/5 on the *istD is good for wildlife :-) >From a set of semi-formal tests using the AF1.7, 1.4X-L and 2-XL convertors my 1.7 appeared to perform the best. It offered optimum performance at wider apertures than the X-L convertors on the four 200mm + lenses that I tested them with. Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
RE: 1.7 XAF SMC Pentax adapter
... that depends on how far you want to focus. You set a proper range from the beginning - or/and simply re-adjust as you go along. I guess it's "close" - "medium" - "far" :-) Regards Jens Jens Bladt http://www.jensbladt.dk -Oprindelig meddelelse- Fra: John Whittingham [mailto:[EMAIL PROTECTED] Sendt: 4. februar 2006 20:33 Til: pentax-discuss@pdml.net Emne: RE: 1.7 XAF SMC Pentax adapter Thanks again Jens, very informative as always. > I just tested it with my Fa 1.4/50mm. It works just fine - but only > within a certain range (can't "hunt" all the way back and forth). Would it be preferable to set the lens at infinity or a shorter distance in your opinion. Regards, John John Whittingham Technician "you can't be optimistic with a misty optic" -- Original Message --- From: "Jens Bladt" <[EMAIL PROTECTED]> To: Sent: Sat, 4 Feb 2006 20:25:55 +0100 Subject: RE: 1.7 XAF SMC Pentax adapter > Thanks, John. > For panoramas like this, there's no way I could ever focus this accurate > > (for each frame) by hand - even very small variations of the focus distance > will be taken care of by the AF adapter. > The converter does the focusing (I should have figured this out :-) - > there's NO "SCREWDRIVER-Conection" - naturally, since the adapter > was made for MF lenses (without a screwdriver). > > I just tested it with my Fa 1.4/50mm. It works just fine - but only > within a certain range (can't "hunt" all the way back and forth). Regards > Jens > Jens Bladt > http://www.jensbladt.dk > > -Oprindelig meddelelse- > Fra: John Whittingham [mailto:[EMAIL PROTECTED] > Sendt: 4. februar 2006 20:10 > Til: pentax-discuss@pdml.net > Emne: RE: 1.7 XAF SMC Pentax adapter > > Hi, thanks Jens. That panorama really is impressive, not just the > image but the work you have done. I'm not in the market for an > expensive lens such as the FA* 80-200 2.8 I'd be lucky if I could > afford the Sigma alternative, I'm still hoping for something good > from the promised FA zoom on the roadmap. > > When you use the converter with an FA lens is it the converter that > does the focusing or the lens? > > Best regards, > > John > > John Whittingham > > Technician > > "you can't be optimistic with a misty optic" > > -- Original Message --- > From: "Jens Bladt" <[EMAIL PROTECTED]> > To: > Sent: Sat, 4 Feb 2006 11:08:35 +0100 > Subject: RE: 1.7 XAF SMC Pentax adapter > > > Yes, John. > > I have used mine with a 2.5/135mm many times. I have used it for concert > > shots and for long distance panoramas. > > This one was shot with this combo: > > http://www.flickr.com/photos/bladt/41643010/in/set-877712/ > > > > The lack of sharpness is motion blur (subject/camera), not caused by > > the lens. So, don't forget that the converter will "eat some light" - > > perhaps 1½ F-stop. If you have enough light, it's fabulous. > > > > If you don't a FA 2.8/200mm, a FA* 2.8/80-200mm (both rather > > expensive) or a K 2.5/200mm (if you can find one) may be a better choise. > > > > And this panrama was made with this combo as well: > > http://gallery13117.fotopic.net/p21530701.html > > Try to watch it in full size - it's incredibly sharp - you can > > clearly see steel wires rather far away. I the mittle of the picture > > (to the right of the blue chimney) is a steel pylon (for TV > > broadcast). It is possible to count the small steel beams inside > > this pylon (in the original picture). This pylon is apr. 15 km away > > from where I was standing. The beams are perhaps one inch thick. > > Amazing, don't you think? > > > > Regards > > Jens > > > > Jens Bladt > > http://www.jensbladt.dk > > > > -Oprindelig meddelelse- > > Fra: John Whittingham [mailto:[EMAIL PROTECTED] > > Sendt: 4. februar 2006 10:26 > > Til: pentax-discuss@pdml.net > > Emne: RE: 1.7 XAF SMC Pentax adapter > > > > > This is a great tool. Absolutely top quality. I only have good > > > things to say about this item. Focusing is accurate, the image > > > quality is excellent. It makes focusing more accurate that MF. It's > > > actually one of the best Pentax products I have ever bought. It's > > > simply highly recomendable. You will never regret buying one of > > > these - it's better than any other converter you will com
RE: 1.7 XAF SMC Pentax adapter
On Sat, 4 Feb 2006, John Whittingham wrote: Would it be preferable to set the lens at infinity or a shorter distance in your opinion. The manual states that you may get vignetting if not at infinity. But the T/C does not have a great focussing range (trade-off for speed), so some times you are forced to pre-focus (if approximately). Kostas
RE: 1.7 XAF SMC Pentax adapter
Thanks again Jens, very informative as always. > I just tested it with my Fa 1.4/50mm. It works just fine - but only > within a certain range (can't "hunt" all the way back and forth). Would it be preferable to set the lens at infinity or a shorter distance in your opinion. Regards, John John Whittingham Technician "you can't be optimistic with a misty optic" -- Original Message --- From: "Jens Bladt" <[EMAIL PROTECTED]> To: Sent: Sat, 4 Feb 2006 20:25:55 +0100 Subject: RE: 1.7 XAF SMC Pentax adapter > Thanks, John. > For panoramas like this, there's no way I could ever focus this accurate > > (for each frame) by hand - even very small variations of the focus distance > will be taken care of by the AF adapter. > The converter does the focusing (I should have figured this out :-) - > there's NO "SCREWDRIVER-Conection" - naturally, since the adapter > was made for MF lenses (without a screwdriver). > > I just tested it with my Fa 1.4/50mm. It works just fine - but only > within a certain range (can't "hunt" all the way back and forth). Regards > Jens > Jens Bladt > http://www.jensbladt.dk > > -Oprindelig meddelelse----- > Fra: John Whittingham [mailto:[EMAIL PROTECTED] > Sendt: 4. februar 2006 20:10 > Til: pentax-discuss@pdml.net > Emne: RE: 1.7 XAF SMC Pentax adapter > > Hi, thanks Jens. That panorama really is impressive, not just the > image but the work you have done. I'm not in the market for an > expensive lens such as the FA* 80-200 2.8 I'd be lucky if I could > afford the Sigma alternative, I'm still hoping for something good > from the promised FA zoom on the roadmap. > > When you use the converter with an FA lens is it the converter that > does the focusing or the lens? > > Best regards, > > John > > John Whittingham > > Technician > > "you can't be optimistic with a misty optic" > > -- Original Message --- > From: "Jens Bladt" <[EMAIL PROTECTED]> > To: > Sent: Sat, 4 Feb 2006 11:08:35 +0100 > Subject: RE: 1.7 XAF SMC Pentax adapter > > > Yes, John. > > I have used mine with a 2.5/135mm many times. I have used it for concert > > shots and for long distance panoramas. > > This one was shot with this combo: > > http://www.flickr.com/photos/bladt/41643010/in/set-877712/ > > > > The lack of sharpness is motion blur (subject/camera), not caused by > > the lens. So, don't forget that the converter will "eat some light" - > > perhaps 1½ F-stop. If you have enough light, it's fabulous. > > > > If you don't a FA 2.8/200mm, a FA* 2.8/80-200mm (both rather > > expensive) or a K 2.5/200mm (if you can find one) may be a better choise. > > > > And this panrama was made with this combo as well: > > http://gallery13117.fotopic.net/p21530701.html > > Try to watch it in full size - it's incredibly sharp - you can > > clearly see steel wires rather far away. I the mittle of the picture > > (to the right of the blue chimney) is a steel pylon (for TV > > broadcast). It is possible to count the small steel beams inside > > this pylon (in the original picture). This pylon is apr. 15 km away > > from where I was standing. The beams are perhaps one inch thick. > > Amazing, don't you think? > > > > Regards > > Jens > > > > Jens Bladt > > http://www.jensbladt.dk > > > > -Oprindelig meddelelse- > > Fra: John Whittingham [mailto:[EMAIL PROTECTED] > > Sendt: 4. februar 2006 10:26 > > Til: pentax-discuss@pdml.net > > Emne: RE: 1.7 XAF SMC Pentax adapter > > > > > This is a great tool. Absolutely top quality. I only have good > > > things to say about this item. Focusing is accurate, the image > > > quality is excellent. It makes focusing more accurate that MF. It's > > > actually one of the best Pentax products I have ever bought. It's > > > simply highly recomendable. You will never regret buying one of > > > these - it's better than any other converter you will come across. I > > > will never sell mine, no matter how attractive the offer may be. I > > > can't believe Pentax stoped making this - it is very usefull. > > > > Has anyone any exprience of using the converter with the SMC 135mm > > f/2.5, I've been considering looking for one seconhand for some time, > > I'm currently using the FA 135 f/2.8 with a Kenko SHQ 1.5x > > converter as my 200mm AF lens and wondered if there would be any > > advanta
RE: 1.7 XAF SMC Pentax adapter
Thanks, John. For panoramas like this, there's no way I could ever focus this accurate (for each frame) by hand - even very small variations of the focus distance will be taken care of by the AF adapter. The converter does the focusing (I should have figured this out :-) - there's NO "SCREWDRIVER-Conection" - naturally, since the adapter was made for MF lenses (without a screwdriver). I just tested it with my Fa 1.4/50mm. It works just fine - but only within a certain range (can't "hunt" all the way back and forth). Regards Jens Jens Bladt http://www.jensbladt.dk -Oprindelig meddelelse- Fra: John Whittingham [mailto:[EMAIL PROTECTED] Sendt: 4. februar 2006 20:10 Til: pentax-discuss@pdml.net Emne: RE: 1.7 XAF SMC Pentax adapter Hi, thanks Jens. That panorama really is impressive, not just the image but the work you have done. I'm not in the market for an expensive lens such as the FA* 80-200 2.8 I'd be lucky if I could afford the Sigma alternative, I'm still hoping for something good from the promised FA zoom on the roadmap. When you use the converter with an FA lens is it the converter that does the focusing or the lens? Best regards, John John Whittingham Technician "you can't be optimistic with a misty optic" -- Original Message --- From: "Jens Bladt" <[EMAIL PROTECTED]> To: Sent: Sat, 4 Feb 2006 11:08:35 +0100 Subject: RE: 1.7 XAF SMC Pentax adapter > Yes, John. > I have used mine with a 2.5/135mm many times. I have used it for concert > shots and for long distance panoramas. > This one was shot with this combo: > http://www.flickr.com/photos/bladt/41643010/in/set-877712/ > > The lack of sharpness is motion blur (subject/camera), not caused by > the lens. So, don't forget that the converter will "eat some light" - > perhaps 1½ F-stop. If you have enough light, it's fabulous. > > If you don't a FA 2.8/200mm, a FA* 2.8/80-200mm (both rather > expensive) or a K 2.5/200mm (if you can find one) may be a better choise. > > And this panrama was made with this combo as well: > http://gallery13117.fotopic.net/p21530701.html > Try to watch it in full size - it's incredibly sharp - you can > clearly see steel wires rather far away. I the mittle of the picture > (to the right of the blue chimney) is a steel pylon (for TV > broadcast). It is possible to count the small steel beams inside > this pylon (in the original picture). This pylon is apr. 15 km away > from where I was standing. The beams are perhaps one inch thick. > Amazing, don't you think? > > Regards > Jens > > Jens Bladt > http://www.jensbladt.dk > > -Oprindelig meddelelse- > Fra: John Whittingham [mailto:[EMAIL PROTECTED] > Sendt: 4. februar 2006 10:26 > Til: pentax-discuss@pdml.net > Emne: RE: 1.7 XAF SMC Pentax adapter > > > This is a great tool. Absolutely top quality. I only have good > > things to say about this item. Focusing is accurate, the image > > quality is excellent. It makes focusing more accurate that MF. It's > > actually one of the best Pentax products I have ever bought. It's > > simply highly recomendable. You will never regret buying one of > > these - it's better than any other converter you will come across. I > > will never sell mine, no matter how attractive the offer may be. I > > can't believe Pentax stoped making this - it is very usefull. > > Has anyone any exprience of using the converter with the SMC 135mm > f/2.5, I've been considering looking for one seconhand for some time, > I'm currently using the FA 135 f/2.8 with a Kenko SHQ 1.5x > converter as my 200mm AF lens and wondered if there would be any > advantage optically other than a slight increase in FL. > > Regards, > > John > > John Whittingham > > Technician > > "you can't be optimistic with a misty optic" > > -- -- > > > The information transmitted is intended only for the person to whom > it is addressed and may contain confidential and/or privileged > material. If you have received an email in error please notify > Carmel College on [EMAIL PROTECTED] then delete all copies of it > from your systems. > > Although Carmel College scans incoming and outgoing emails and email > attachments for viruses we cannot > guarantee a communication to be free of all viruses nor accept any > responsibility for viruses. > > Although Carmel College monitors incoming and outgoing emails for > inappropriate content, the college cannot > be held responsible for the views or expressions of the author. > The views expressed
RE: 1.7 XAF SMC Pentax adapter
Hi, thanks Jens. That panorama really is impressive, not just the image but the work you have done. I'm not in the market for an expensive lens such as the FA* 80-200 2.8 I'd be lucky if I could afford the Sigma alternative, I'm still hoping for something good from the promised FA zoom on the roadmap. When you use the converter with an FA lens is it the converter that does the focusing or the lens? Best regards, John John Whittingham Technician "you can't be optimistic with a misty optic" -- Original Message --- From: "Jens Bladt" <[EMAIL PROTECTED]> To: Sent: Sat, 4 Feb 2006 11:08:35 +0100 Subject: RE: 1.7 XAF SMC Pentax adapter > Yes, John. > I have used mine with a 2.5/135mm many times. I have used it for concert > shots and for long distance panoramas. > This one was shot with this combo: > http://www.flickr.com/photos/bladt/41643010/in/set-877712/ > > The lack of sharpness is motion blur (subject/camera), not caused by > the lens. So, don't forget that the converter will "eat some light" - > perhaps 1½ F-stop. If you have enough light, it's fabulous. > > If you don't a FA 2.8/200mm, a FA* 2.8/80-200mm (both rather > expensive) or a K 2.5/200mm (if you can find one) may be a better choise. > > And this panrama was made with this combo as well: > http://gallery13117.fotopic.net/p21530701.html > Try to watch it in full size - it's incredibly sharp - you can > clearly see steel wires rather far away. I the mittle of the picture > (to the right of the blue chimney) is a steel pylon (for TV > broadcast). It is possible to count the small steel beams inside > this pylon (in the original picture). This pylon is apr. 15 km away > from where I was standing. The beams are perhaps one inch thick. > Amazing, don't you think? > > Regards > Jens > > Jens Bladt > http://www.jensbladt.dk > > -----Oprindelig meddelelse- > Fra: John Whittingham [mailto:[EMAIL PROTECTED] > Sendt: 4. februar 2006 10:26 > Til: pentax-discuss@pdml.net > Emne: RE: 1.7 XAF SMC Pentax adapter > > > This is a great tool. Absolutely top quality. I only have good > > things to say about this item. Focusing is accurate, the image > > quality is excellent. It makes focusing more accurate that MF. It's > > actually one of the best Pentax products I have ever bought. It's > > simply highly recomendable. You will never regret buying one of > > these - it's better than any other converter you will come across. I > > will never sell mine, no matter how attractive the offer may be. I > > can't believe Pentax stoped making this - it is very usefull. > > Has anyone any exprience of using the converter with the SMC 135mm > f/2.5, I've been considering looking for one seconhand for some time, > I'm currently using the FA 135 f/2.8 with a Kenko SHQ 1.5x > converter as my 200mm AF lens and wondered if there would be any > advantage optically other than a slight increase in FL. > > Regards, > > John > > John Whittingham > > Technician > > "you can't be optimistic with a misty optic" > > > > > The information transmitted is intended only for the person to whom > it is addressed and may contain confidential and/or privileged > material. If you have received an email in error please notify > Carmel College on [EMAIL PROTECTED] then delete all copies of it > from your systems. > > Although Carmel College scans incoming and outgoing emails and email > attachments for viruses we cannot > guarantee a communication to be free of all viruses nor accept any > responsibility for viruses. > > Although Carmel College monitors incoming and outgoing emails for > inappropriate content, the college cannot > be held responsible for the views or expressions of the author. > The views expressed may not necessarily be those of Carmel College > and Carmel College cannot be held responsible for any loss or injury > resulting from the contents of a message. > > > --- End of Original Message --- The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming an
RE: 1.7 XAF SMC Pentax adapter
I have used mine a lot on the M* 4/300mm with great reslults. But why use an AF adapter on AF lenses? I'm not sure AF works (well or at all) on an AF lens. Regards Jens Jens Bladt http://www.jensbladt.dk -Oprindelig meddelelse- Fra: Kenneth Waller [mailto:[EMAIL PROTECTED] Sendt: 4. februar 2006 18:08 Til: pentax-discuss@pdml.net Emne: Re: 1.7 XAF SMC Pentax adapter >>Seeking comments about usage/performance on FA lenses. Thanks to all that responded to my request - one of the great things about this list. I was thinking about specifically using it on my 600mm FA & 300mm FA Curious as to what they cost nowadays. Kenneth Waller - Original Message - From: "Jan van Wijk" <[EMAIL PROTECTED]> Subject: Re: 1.7 XAF SMC Pentax adapter > On Fri, 3 Feb 2006 15:10:45 -0500, Kenneth Waller wrote: > >>Seeking comments about usage/performance on FA lenses. >>Image degradation/auto focus performance etc. > > It is VERY good in my experience. > > I liked mine so much, I got another used one as spare :-) > One is almost permanently on the A 300mm f/2.8 and > the other is used with all the others. > > Works great on MF lenses, and is nice on an AF one > to reduce the AF hunting area (focus limit). > > Quality seems quite good, can hardly see a difference between > this 1.7 one and the two 1.4x or 2x L converters when used on > the 300mm (and 510mm f/5 on the *istD is good for wildlife :-) > > Regards, JvW > > -- > Jan van Wijk; http://www.dfsee.com/gallery > >
Re: 1.7 XAF SMC Pentax adapter
Seeking comments about usage/performance on FA lenses. Thanks to all that responded to my request - one of the great things about this list. I was thinking about specifically using it on my 600mm FA & 300mm FA Curious as to what they cost nowadays. Kenneth Waller - Original Message - From: "Jan van Wijk" <[EMAIL PROTECTED]> Subject: Re: 1.7 XAF SMC Pentax adapter On Fri, 3 Feb 2006 15:10:45 -0500, Kenneth Waller wrote: Seeking comments about usage/performance on FA lenses. Image degradation/auto focus performance etc. It is VERY good in my experience. I liked mine so much, I got another used one as spare :-) One is almost permanently on the A 300mm f/2.8 and the other is used with all the others. Works great on MF lenses, and is nice on an AF one to reduce the AF hunting area (focus limit). Quality seems quite good, can hardly see a difference between this 1.7 one and the two 1.4x or 2x L converters when used on the 300mm (and 510mm f/5 on the *istD is good for wildlife :-) Regards, JvW -- Jan van Wijk; http://www.dfsee.com/gallery
Re: 1.7 XAF SMC Pentax adapter
On Fri, 3 Feb 2006 15:10:45 -0500, Kenneth Waller wrote: >Seeking comments about usage/performance on FA lenses. >Image degradation/auto focus performance etc. It is VERY good in my experience. I liked mine so much, I got another used one as spare :-) One is almost permanently on the A 300mm f/2.8 and the other is used with all the others. Works great on MF lenses, and is nice on an AF one to reduce the AF hunting area (focus limit). Quality seems quite good, can hardly see a difference between this 1.7 one and the two 1.4x or 2x L converters when used on the 300mm (and 510mm f/5 on the *istD is good for wildlife :-) Regards, JvW -- Jan van Wijk; http://www.dfsee.com/gallery
RE: 1.7 XAF SMC Pentax adapter
Yes, John. I have used mine with a 2.5/135mm many times. I have used it for concert shots and for long distance panoramas. This one was shot with this combo: http://www.flickr.com/photos/bladt/41643010/in/set-877712/ The lack of sharpness is motion blur (subject/camera), not caused by the lens. So, don't forget that the converter will "eat some light" - perhaps 1½ F-stop. If you have enough light, it's fabulous. If you don't a FA 2.8/200mm, a FA* 2.8/80-200mm (both rather expensive) or a K 2.5/200mm (if you can find one) may be a better choise. And this panrama was made with this combo as well: http://gallery13117.fotopic.net/p21530701.html Try to watch it in full size - it's incredibly sharp - you can clearly see steel wires rather far away. I the mittle of the picture (to the right of the blue chimney) is a steel pylon (for TV broadcast). It is possible to count the small steel beams inside this pylon (in the original picture). This pylon is apr. 15 km away from where I was standing. The beams are perhaps one inch thick. Amazing, don't you think? Regards Jens Jens Bladt http://www.jensbladt.dk -Oprindelig meddelelse- Fra: John Whittingham [mailto:[EMAIL PROTECTED] Sendt: 4. februar 2006 10:26 Til: pentax-discuss@pdml.net Emne: RE: 1.7 XAF SMC Pentax adapter > This is a great tool. Absolutely top quality. I only have good > things to say about this item. Focusing is accurate, the image > quality is excellent. It makes focusing more accurate that MF. It's > actually one of the best Pentax products I have ever bought. It's > simply highly recomendable. You will never regret buying one of > these - it's better than any other converter you will come across. I > will never sell mine, no matter how attractive the offer may be. I > can't believe Pentax stoped making this - it is very usefull. Has anyone any exprience of using the converter with the SMC 135mm f/2.5, I've been considering looking for one seconhand for some time, I'm currently using the FA 135 f/2.8 with a Kenko SHQ 1.5x converter as my 200mm AF lens and wondered if there would be any advantage optically other than a slight increase in FL. Regards, John John Whittingham Technician "you can't be optimistic with a misty optic" The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message.
RE: 1.7 XAF SMC Pentax adapter
> This is a great tool. Absolutely top quality. I only have good > things to say about this item. Focusing is accurate, the image > quality is excellent. It makes focusing more accurate that MF. It's > actually one of the best Pentax products I have ever bought. It's > simply highly recomendable. You will never regret buying one of > these - it's better than any other converter you will come across. I > will never sell mine, no matter how attractive the offer may be. I > can't believe Pentax stoped making this - it is very usefull. Has anyone any exprience of using the converter with the SMC 135mm f/2.5, I've been considering looking for one seconhand for some time, I'm currently using the FA 135 f/2.8 with a Kenko SHQ 1.5x converter as my 200mm AF lens and wondered if there would be any advantage optically other than a slight increase in FL. Regards, John John Whittingham Technician "you can't be optimistic with a misty optic" The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message.
RE: 1.7 XAF SMC Pentax adapter
On 3 Feb 2006 at 23:40, Jens Bladt wrote: > This is a great tool. Absolutely top quality. I only have good things to say > about this item. Focusing is accurate, the image quality is excellent. It > makes focusing more accurate that MF. It's actually one of the best Pentax > products I have ever bought. It's simply highly recomendable. You will never > regret buying one of these - it's better than any other converter you will > come across. I will never sell mine, no matter how attractive the offer may > be. I can't believe Pentax stoped making this - it is very usefull. I've got to agree with Jens 100%, it's one of the best TCs I've ever used apart from the AF action which I have found very useful particularly given that you can limit AF hunt by pre-setting the lens focus. Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
RE: 1.7 XAF SMC Pentax adapter
This is a great tool. Absolutely top quality. I only have good things to say about this item. Focusing is accurate, the image quality is excellent. It makes focusing more accurate that MF. It's actually one of the best Pentax products I have ever bought. It's simply highly recomendable. You will never regret buying one of these - it's better than any other converter you will come across. I will never sell mine, no matter how attractive the offer may be. I can't believe Pentax stoped making this - it is very usefull. Regards Jens Jens Bladt http://www.jensbladt.dk -Oprindelig meddelelse- Fra: Kenneth Waller [mailto:[EMAIL PROTECTED] Sendt: 3. februar 2006 21:11 Til: pentax-discuss@pdml.net Emne: 1.7 XAF SMC Pentax adapter Seeking comments about usage/performance on FA lenses. Image degradation/auto focus performance etc. Thanks in advance Kenneth Waller
Re: 1.7 XAF SMC Pentax adapter
I have had great success, mostly on a F 300 4.5. Not the application intended by Pentax but as a multiplier it has fine optics. Mark Stringer - Original Message - From: "Kenneth Waller" <[EMAIL PROTECTED]> To: Sent: Friday, February 03, 2006 2:10 PM Subject: 1.7 XAF SMC Pentax adapter Seeking comments about usage/performance on FA lenses. Image degradation/auto focus performance etc. Thanks in advance Kenneth Waller
Re: 1.7 XAF SMC Pentax adapter
I have had great success, mostly on a F 300 4.5. Not the application intended by Pentax but as a multiplier it has fine optics. Mark Stringer - Original Message - From: "Kenneth Waller" <[EMAIL PROTECTED]> To: Sent: Friday, February 03, 2006 2:10 PM Subject: 1.7 XAF SMC Pentax adapter Seeking comments about usage/performance on FA lenses. Image degradation/auto focus performance etc. Thanks in advance Kenneth Waller
1.7 XAF SMC Pentax adapter
Seeking comments about usage/performance on FA lenses. Image degradation/auto focus performance etc. Thanks in advance Kenneth Waller
