Different MTF scales on photozone.de: how to compare them?

Started Jun 15, 2014 | Discussions thread
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as1mov
as1mov Regular Member • Posts: 467
Different MTF scales on photozone.de: how to compare them?

Hi,

I happen to have Nikon 70-300mm and want to buy 70-200mm F4.

I know the 70-300 is pretty sharp in the range 70-200, so it would be interesting to me to compare it with the 70-200mm, which is said to be very sharp.

Looking at the photozone.de MTF curves:

http://www.photozone.de/Reviews/250-nikkor-af-s-70-300mm-f45-56-g-if-ed-vr-review--test-report?start=1

http://www.photozone.de/nikon_ff/782-nikonafs702004vrfx?start=1

I understand they were measured with different techniques and different scale: so how to compare them? What is good in one diagram is bad in the other...

P.S.: had a loook at the imatest explanations but got lost..

Thanks.

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