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Given Zeiss published MTF is "A" and my simulation MTF is "B", how good Combined MTF "C"= A & B is?
I understand that is your question.
C is, most likely, min(A, B). And sometimes worse than it.
Theoretically, there is also a quite small possibility that C is better than min(A, B) when those abberations cancel each other, but don't expect too much.
If B is better than A everywhere, and B is higher than 50% everywhere, it is highly likely that PCX can recover visibly 100% original performance,
except the distortion and the transmission/reflection loss that are not included in A nor B.
When B is not so good (under 50%), C's uncertainty grows, that means C is pefhaps much worse than both A and B in this case.
Only Zeiss can get deterministic value of C because they have all of master lens parameters.
We will never get those parameters so by using perfect lens instead, we can only tell C's probability.
Well, only test images tell truth. I appriciate everybody posting any test results here