For example

We have summicron at our computer lens design software.

Our computer uses zernike 1,2,3,4 for to correct the all aberrations on the film plane .

Same computer uses zernike 4,5,7,8 for to correct the all aberrations on the film plane for another generation.

At the end , there is no aberration on the film plane for these lenses.

Do the signatures be different ?

If yes , there is no meaning of MTF test.

Umut