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Jupiter 8 on m42?
Old 12-24-2018   #1
Barry Kirsten
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Location: Brookfield, Victoria, Australia
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Jupiter 8 on m42?

I'm impressed by the images on the Jupiter 8 thread and as I love the rendition of Sonnar lenses began to think of getting one. However when looking at samples on the auction site it became apparent that apart from a few which are modified e.g. for Nikon, they're all ltm m39 thread.


This raises the question of compatibility for m42. The flange-film plane distances for the two standards are different - 45.2mm for m39, and 45.46 for m42. Granted the difference is small - 0.26mm - but I would have thought this is significant, especially at large apertures and close subject distances. What do people think? And are any of you using J8s on m42? Appreciate any comments.
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