What's available out beyond 150mm that can focus decently close? I'm looking sub-$500 used type lenses. I know the Sigma 70-200 HSM Macro can go down to about 1m, but this is newer and used copies are few and far in between. How are the Nikon 180mm or Sigma 150/180's? I want something that can dual purpose as a macro and for my bike trials photography. I think I'm off of my zoom lust for a while... After a week of shooting exclusively with primes, I was more than satisfied with sharpness wide open. (24mm and 50mm primarily) I feel that using primes this week has forced me to be creative in how I shoot rather than being lazy and relying on the zoom to get me closer. My current goal is to get a D1H and a long(er) prime beyond 150mm.