06-04-2019, 11:07 PM
Like OL as well, Klaus 
. I think you were saying that each manufacturer fabricates their own kind of MTF charts?
Btw., Luny Tune: I tend to disagree about "MTF charts are probably the most reliable way to describe the actual performance of a lens with data" - as MTF results also depend of the procedure. OL uses charts, and there are some limits to these as well as the charts are first photographed, then post processed and then analyzed. Lensrentals has a very expensive measuring device which leaves the different sensors and the post process out of the equation. Both results are not directly comparable, I guess, but lemons at OL will not become shiny superglass at lensrentals - and vice versa.
There's also more to a lens than only MTF - and just because you read the MTF-numbers, it still remains an incomplete characteristic. I guess, you're still in the "what is the best lens for my camera?" state?
. I think you were saying that each manufacturer fabricates their own kind of MTF charts?Btw., Luny Tune: I tend to disagree about "MTF charts are probably the most reliable way to describe the actual performance of a lens with data" - as MTF results also depend of the procedure. OL uses charts, and there are some limits to these as well as the charts are first photographed, then post processed and then analyzed. Lensrentals has a very expensive measuring device which leaves the different sensors and the post process out of the equation. Both results are not directly comparable, I guess, but lemons at OL will not become shiny superglass at lensrentals - and vice versa.
There's also more to a lens than only MTF - and just because you read the MTF-numbers, it still remains an incomplete characteristic. I guess, you're still in the "what is the best lens for my camera?" state?