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At what distance are the Imatest charts tested?
#2
The object magnification is what counts - the focus distance derives from there.

 

Generally we are using:

- Full format: 1:34

- APS-C: 1:52

- Four-Thirds: 1:63

 

As an exception to the rule, we are sometimes using less or more depending on the lens type.

 

Out of curiosity I once tested an full format ultra-wide lens at 1:80 but that didn't really make a substantial difference. Vice versa, a test at 1:10 had a much high impact but then print quality is certainly also a limiting factor.

  


Messages In This Thread
At what distance are the Imatest charts tested? - by Canuck - 11-05-2015, 04:39 PM
At what distance are the Imatest charts tested? - by Klaus - 11-05-2015, 09:27 PM
At what distance are the Imatest charts tested? - by Canuck - 11-06-2015, 02:01 AM
At what distance are the Imatest charts tested? - by Canuck - 11-06-2015, 04:39 PM

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