I have a nifty fifty and am debating selling... or should I keep it? The other lenses I have in my bag (which all fit perfectly): Canon 135L f/2, Canon 85 f/1.8, Tamron 28 - 75 f/2.8, and Tokina 16-28 f/2.8. I feel as though the Tamron is a sharper lens than the 50mm, and it covers that range. Will I regret selling it? Part of me says, "keep it... it was a good deal and you won't make much on it anyway" (paid $84 for it new in 2009) and the other part of me says, "you'll never use it now that you have the 85 and the 135, which are better portrait lenses anyway".
Shooting with a 5D Mark II, if it matters. I do 90% portrait photography, mixed in with some landscape and macro (flowers and stuff).