DXO: Fair and Balanced

[GMCPhotographics]

Lens tests cannot be compared across models for obvious reasons. I realize that you were doing this tongue in cheek, but its a good example. The measurements vary from camera to camera because they are not measuring a lens. Some people seem to think they are measuring a lens, but that's not the case.

While I generally agree, I do wonder why the same lens on the Canon seems to have a dimmer T stop value than they the same lens it attached to a Nikon. The vignetting is worse too on Canon...hmmm.