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05-30-2011, 11:53 PM   #1
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medium format lenses resolution chart

i`ve search the google, with no success... any thoughts?

05-31-2011, 05:44 AM   #2
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look at Carl Zeiss´photografic department archive: all data sheets for Zeiss MF lenses. e.g. http://www.zeiss.de/C12567A8003B8B6F/EmbedTitelIntern/Sonnar4_180mm_CFE_101132_d/$File/Sonnar4_180mm_CFE_101132_d.pdf
05-31-2011, 06:49 AM   #3
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interesting! i`ve got to look this through.

Last edited by spacevoid8; 05-31-2011 at 07:28 AM.
06-01-2011, 05:51 AM - 1 Like   #4
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The only one I know of is this:
Medium Format Cameras - Testing Lenses

Note that lens resolution is largely a 135 format game, as you're pushing physics with the small film size. With medium format, absolute resolution is somewhat less critical due to everything being 'farther apart'.

06-02-2011, 12:44 AM   #5
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QuoteOriginally posted by Nesster Quote
The only one I know of is this: Medium Format Cameras - Testing Lenses
i`ve google it already thanks

QuoteOriginally posted by Nesster Quote
due to everything being 'farther apart'.
can you simplify your conclusion. Sorry, English is not my native language..
06-02-2011, 03:25 AM   #6
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QuoteOriginally posted by spacevoid8 Quote
can you simplify your conclusion. Sorry, English is not my native language..
Let's say you need 10,000 lines across the film frame in order to see something as 'sharp' and with good detail. (I'm making the 10,000 up- though there is some theoretical number, I'm sure - multiply say 80 lpmm by the film size.)

With 35mm you need to cram those 10,000 lines into a smaller space than with 120. Therefore the lens resolution (and film resolution) are more important with 35mm, as the detail required is in the range where we are pushing the limits. With 120 the lens (and film) is still loafing.
06-02-2011, 05:51 AM   #7
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QuoteOriginally posted by Nesster Quote
Let's say you need 10,000 lines across the film frame in order to see something as 'sharp' and with good detail. (I'm making the 10,000 up- though there is some theoretical number, I'm sure - multiply say 80 lpmm by the film size.)

With 35mm you need to cram those 10,000 lines into a smaller space than with 120. Therefore the lens resolution (and film resolution) are more important with 35mm, as the detail required is in the range where we are pushing the limits. With 120 the lens (and film) is still loafing.
i think i`ve got it
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