11-01-2014, 12:44 PM
I think I mentioned this before but lensrental did an article how the thickness of the filter infront of the sensor has a huge impact on lens performance. They inserted some filters on certain cameras to improve lenses. I can see how this would be more problematic for 'generic' lenses that are designed for multiple cameras which has varying filter thickness.
It was not clear to me why this was the case given that the filter did not appear to be optical but it might explain some of the result differences between sony and fuji for the 'same' lens.
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Here is a link to part 3; part 1 or part 2 has some real data how adding a bit of glass behind the lense improved the performance:
http://www.lensrentals.com/blog/2014/07/...he-summary
It was not clear to me why this was the case given that the filter did not appear to be optical but it might explain some of the result differences between sony and fuji for the 'same' lens.
--
Here is a link to part 3; part 1 or part 2 has some real data how adding a bit of glass behind the lense improved the performance:
http://www.lensrentals.com/blog/2014/07/...he-summary