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MITAKON 35MM F0.95 E-MOUNT
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Home   Manual Focus Lenses
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PostPosted: Wed Apr 24, 2013 12:46 am    Post subject: Reply with quote
The Nokton 1.1 is known to have focus shift, so perhaps it's because of that?


PostPosted: Wed Apr 24, 2013 3:32 am    Post subject: Reply with quote
Focus shift is caused by spherical abberation so I could well believe there is an issue with the level of correction, as I said, it is hard to make an ultrafast lens that is also highly corrected.


PostPosted: Wed Apr 24, 2013 4:07 am    Post subject: Reply with quote
Highly corrected from wide open to stopped down? Yes it's hard. Highly corrected stopped down and usable wide open? Not so hard, pretty much every top tier player had such a 50/1.2 lens. IMHO if a double Gauss lens does not improve significantly on stopping down, it's a sure sign of a faulty lens. I haven't seen a single such lens yet, have you?
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