11-04-2023, 08:01 PM
(11-04-2023, 04:54 PM)fotorrhoe Wrote: If you use a higher resolution sensor, the values increase for the same lens.
Ok, that pretty much answers both my questions.
So, in other words, these tests cannot precisely tell me if the sharpness of a particular Sony FE lens on a Sony a7iii is higher than that of a Nikon G lens on a D750. Because the Sony FE lenses have been measured with a Sony a7r which is 36 MP as opposed to 24 MP for the D750. So if the Sony lens had been measured with a Sony a7iii the test results would be more comparable, since the a7iii also has 24 MP.
Of course I can still draw some information from the test results of the Sony and the Nikon lenses, such as which lens has more sharpness falloff towards the corners.
BTW, are these MTF measurements based on unprocessed, unsharpened RAW files?