The 35L and the 50L both produce ~1.5% of barrel distortion. So they are virtually identical as far as that goes.
http://www.photozone.de …/516-canon35f14ff?start=1
http://www.photozone.de …72-canon_50_12_5d?start=1
So I disagree that the 50 is better because the 35 distorts people. They both have identical distortion.
Thomas, I think Lloyd is referring to linear perspective distortion - caused by being very close to the subject, not barrel distortion which is caused by rectilinear correction within the lens.
In any case I don't see any FL as being right or wrong. Just decide what AOV and magnification you want for a shot. And even that doesn't make as much of an impact to my eyes as does lighting.


