.[. Z , Apr 03, 2004; 03:11 p.m.
Define what you mean by "portrait" -- headshot?
I don't shoot many portraits per se, but when I photograph people it is usually with 24mm, 35mm and 50mm lenses. I have a 135mm lens, which is acceptable for headshots, but that's pretty boring and it is not used nearly as much as the other lenses.