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Proposal - near center charts for ultra-high resolution cameras
#8
Quote:Hi folks,

 

it seems as if the latest Canon review (actually also the others) caused some stir out there.

The issue is that at 50mp the lenses are scaling in the center but at a much lesser degree towards the borders - thus causing an extreme spread between the center and border results. 

 

Thus we are considering to move to a "near center" approach rather than "dead center" (although it never really was the "dead center" - just darn close to it).

"near center" is 1/3 of the distance towards the sides.

 

See the attachment

top: chart as is (for the Canon 35mm f/1.4 USM L II)

middle: near center approach, same scale

bottom: near center approach, adjusted scale

 

Thoughts ? I actually quite like it.
 

There is nothing in my view, which prevents publishing all four bars - unless each bar requires a significant amount of your work (as opossed to scripts extracting the figures from the imatest and producing the input data for the plot program).  Never played with imatest myselft so I don't know that one.

 

By the way, did you ever play with the 40 MP mode of the Oly E-M5ii?  Do you get similar to that Canon when using a top lens of that system?
enjoy
  


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Proposal - near center charts for ultra-high resolution cameras - by joachim - 12-02-2015, 08:11 PM

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