If that was true, no one would bother. MTF charts provide, (from a number of samples), a comprehensive idea of how a lens will eliminate CA, or minimize vignetting, or limit any number of things IN real world use. Maybe you don't notice them because ...
Funny, this MTF chart doesn't match any of the other MTF charts elsewhere for this lens. I can assure you it is MUCH sharper even than that, and it takes both teleconverters very well. I can barely distinguish any sharpness or CA difference between a...
