If Pentax goes full frame, will they promote 645 lenses to fill the lens gap?

turbosaturn · 06-30-2010, 01:06 AM

Originally posted by Digitalis

for the love of god, that brought you to that conclusion?

Questions are not conclusions and Pentax seems to have more 645 lens models in current production than they do 35mm lenses, hence the question. This has nothing to do with Nikon.

**Digitalis** · 06-30-2010, 01:22 AM

Originally posted by turbosaturn

Questions are not conclusions and Pentax seems to have more 645 lens models in current production than they do 35mm lenses, hence the question. This has nothing to do with Nikon.

Well the idea is original, but I have my doubts if anyone in mainstream professional photography would go for 645 lenses on 35mm cameras*. Especially, if there was a smaller alternative.Besides, the use of lens adaptors would become tedious; Or they made the flange distance the same as the 645D, and that would in all probability give a 35mm full frame camera the aesthetics of a concrete brick....and probably the handling characteristics of one too, which is not the original ergonomic idea for 35mm cameras in any case.

*I know some photographers that do this with 35mm and sub 35mm DSLR cameras, typically they use the shift lenses. But even they concede that the lenses size is somewhat limiting, and the reduced lens speed is an issue too; And lets not forget pentax 645 and 67 lenses in no case are of a focal length wider than 35mm.

Spare Tire · 07-10-2010, 09:36 PM

Originally posted by Digitalis

Well the idea is original, but I have my doubts if anyone in mainstream professional photography would go for 645 lenses on 35mm cameras*. Especially, if there was a smaller alternative.Besides, the use of lens adaptors would become tedious; Or they made the flange distance the same as the 645D, and that would in all probability give a 35mm full frame camera the aesthetics of a concrete brick....and probably the handling characteristics of one too, which is not the original ergonomic idea for 35mm cameras in any case.

There already exists a pentax 645 to K adapter. It just doesn't pass on anything, no auto-aperture, and of course no autofocus. I really wished for auto-aperture at least, but found out after i bought the adapter that it's just dumb.

Making an FF with the flange distance of 645 is completely stupid indeed. It's no different than abandoning the K mount.

06-30-2010, 01:22 AM	#17
Digitalis Site Supporter Join Date: Mar 2009 Location: Melbourne, Victoria Photos: Gallery Posts: 11,694	Originally posted by turbosaturn Questions are not conclusions and Pentax seems to have more 645 lens models in current production than they do 35mm lenses, hence the question. This has nothing to do with Nikon. Well the idea is original, but I have my doubts if anyone in mainstream professional photography would go for 645 lenses on 35mm cameras. Especially, if there was a smaller alternative.Besides, the use of lens adaptors would become tedious; Or they made the flange distance the same as the 645D, and that would in all probability give a 35mm full frame camera the aesthetics of a concrete brick....and probably the handling characteristics of one too, which is not the original ergonomic idea for 35mm cameras in any case. I know some photographers that do this with 35mm and sub 35mm DSLR cameras, typically they use the shift lenses. But even they concede that the lenses size is somewhat limiting, and the reduced lens speed is an issue too; And lets not forget pentax 645 and 67 lenses in no case are of a focal length wider than 35mm. Last edited by Digitalis; 06-30-2010 at 01:32 AM.

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06-30-2010, 01:06 AM	#16
turbosaturn Forum Member Join Date: Sep 2008 Posts: 75 Original Poster	Originally posted by Digitalis for the love of god, that brought you to that conclusion? Questions are not conclusions and Pentax seems to have more 645 lens models in current production than they do 35mm lenses, hence the question. This has nothing to do with Nikon.

07-10-2010, 09:36 PM	#18
Spare Tire Senior Member Join Date: Jul 2010 Location: Montréal Posts: 118	Originally posted by Digitalis Well the idea is original, but I have my doubts if anyone in mainstream professional photography would go for 645 lenses on 35mm cameras*. Especially, if there was a smaller alternative.Besides, the use of lens adaptors would become tedious; Or they made the flange distance the same as the 645D, and that would in all probability give a 35mm full frame camera the aesthetics of a concrete brick....and probably the handling characteristics of one too, which is not the original ergonomic idea for 35mm cameras in any case. There already exists a pentax 645 to K adapter. It just doesn't pass on anything, no auto-aperture, and of course no autofocus. I really wished for auto-aperture at least, but found out after i bought the adapter that it's just dumb. Making an FF with the flange distance of 645 is completely stupid indeed. It's no different than abandoning the K mount.