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03-11-2016, 08:44 PM   #1
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Leica S lenses on Pentax 645z?

Hello folks, a new member here I've been trying to find the answer to my question but failed to do so. Is there a way to adapt Leica S lenses to Pentax 645z? Thank you and have a nice weekend

03-11-2016, 09:08 PM   #2
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No, the flange differential between the two cameras is too great to be spanned without using additional optics in the adapter - which would only hobble the optical performance of the lenses. Also the adapter would have to be able to supply power to the shutter cocking mechanism in the S lens to allow for leaf shutter speed control, cocking and firing the leaf shutter itself, aperture control and AF. As of yet there is no adapter that is capable of this.

I work with the Leica S camera and lenses, and the are all optically superb*. but Leica doesn't have the kind of zoom or long prime lenses that Pentax has, and Leica doesn't have optical stabilization in any of their S lenses

*with the exception of the Leica Elmar-S 24mm f/3.5 ASPH, which like the Pentax D-FA25mm f/4 has issues with vignetting and astigmatism- Both lenses really need to be stopped down to get the best out of them. At least filters are easier to use with the Pentax lens due to the built in filter holder, which takes 40.5mm filters which are more manageable, and cheaper than the 95mm filters for the 24mm Elmar.

Last edited by Digitalis; 03-11-2016 at 09:18 PM.
03-11-2016, 09:13 PM   #3
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QuoteOriginally posted by Digitalis Quote
No, the flange differential between the two cameras is too great to be spanned without using additional optics in the adapter - which would only hobble the optical performance of the lenses. Also the adapter would have to be able to supply power to the shutter cocking mechanism in the S lens to allow for leaf shutter speed control, cocking and firing the leaf shutter itself, aperture control and AF. As of yet there is no adapter that is capable of this.
I see.. thank you for your detailed response!
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