Originally posted by spartan I am aware of Falk's work (and i deeply respect him) but the behavior of digital is different than film.
This is true for lenses which produce a large variety of incident angles, such as wide angle lenses. Some micro lens designs then produce colour shifts towards the corners (but others do not, see the NEX-5 vs NEX-7).
This is the only complication I can think of and no short-tele, tele lens has that problem.
For instance the DA* 200/2.8 reuses the optical design of the FA* 200/2.8. Why should the former not be compatible with a FF sensor then?