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09-03-2017, 07:19 AM   #16
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QuoteOriginally posted by old4570 Quote
Its the jupiter ...
I tried it in front of another 50mm , same result .
I need a much wider internal barrel ..
If you reverse the Jupiter on the front of a 75mm, or 85mm, or 105mm, I really think you won't have the problem, or it will get less as the host lens focal length rises.

I would expect you to have the problem you are having, again and again, the more 50s you try it reversed ahead of.

09-03-2017, 07:25 AM   #17
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Hmmm

QuoteOriginally posted by goatsNdonkey Quote
If you reverse the Jupiter on the front of a 75mm, or 85mm, or 105mm, I really think you won't have the problem, or it will get less as the host lens focal length rises.

I would expect you to have the problem you are having, again and again, the more 50s you try it reversed ahead of.
Some 50's are huge ,,, I can't afford a F1.2 , maybe a F1.4 ..
The jupiter might work in front of a 100 or 135 , it will be the next test ...
It's all about having some fun , it works and then maybe not ? I tried this a few years ago with a even smaller lens .. ( same result )
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