Given an imaginary perfect lens (or a zeiss otus...) will my IQ vary according to the camera I use?
My goal is obtaining maximum IQ, in particular maximum sharpness, while using the least expensive camera
In more practical terms...Nikon F6 vs Nikon F80, with a very good lens (otus or similar, which I can easily rent, while a film camera I must buy).
The idea is that the F80 will have (much) higher build tolerances, and since focus happens on a plane that is supposed to be exactly where the film plane is, the "exactly" on the F80 maybe is (much) less "exact" than on the F6, causing a degradation in sharpness.
So on the same line of thought, maybe a Leica has such low build tolerances that its images will be even sharper than both Nikons.
Is this a thing or not?
My goal is obtaining maximum IQ, in particular maximum sharpness, while using the least expensive camera
In more practical terms...Nikon F6 vs Nikon F80, with a very good lens (otus or similar, which I can easily rent, while a film camera I must buy).
The idea is that the F80 will have (much) higher build tolerances, and since focus happens on a plane that is supposed to be exactly where the film plane is, the "exactly" on the F80 maybe is (much) less "exact" than on the F6, causing a degradation in sharpness.
So on the same line of thought, maybe a Leica has such low build tolerances that its images will be even sharper than both Nikons.
Is this a thing or not?

!
!
!