11-23-2010, 12:44 AM
[quote name='PuxaVida' timestamp='1290437762' post='4329']
After the thrill is gone for a period of time, again I feel the urge for affordable (and told-to-be brilliant) M42 MF lenses like Jupiter and Tair. The register difference of Nikon is more than the original M42, so no infinity focus unless an adapter with glass is bought (which I'd rather avoid to be able to see the real performance of the original glass). The question is, where does the problem with "infinity focus" begins? I mean from which distance to infinity?
Kind regards,
Serkan
[/quote]
You may be able to modifiy the lenses you are after. I have a Carl Zeiss Jenna DDR 135mm 3.5 that I just had to modify so that it would turn further on focusing bringing the whole lens group closer to the sensor. Works perfectly on my Nikon D90. I guess this is more likely to be possible on longer lenses though I reckon it might work on the Jupiter as well.
It was really easy to do on the CZ Jenna but I have no idea how easy it is with other lenses.
After the thrill is gone for a period of time, again I feel the urge for affordable (and told-to-be brilliant) M42 MF lenses like Jupiter and Tair. The register difference of Nikon is more than the original M42, so no infinity focus unless an adapter with glass is bought (which I'd rather avoid to be able to see the real performance of the original glass). The question is, where does the problem with "infinity focus" begins? I mean from which distance to infinity?
Kind regards,
Serkan
[/quote]
You may be able to modifiy the lenses you are after. I have a Carl Zeiss Jenna DDR 135mm 3.5 that I just had to modify so that it would turn further on focusing bringing the whole lens group closer to the sensor. Works perfectly on my Nikon D90. I guess this is more likely to be possible on longer lenses though I reckon it might work on the Jupiter as well.
It was really easy to do on the CZ Jenna but I have no idea how easy it is with other lenses.