CHG_CANON wrote:
500mm for your Rebel T3i? The same 500mm that applies to all Canon EOS bodies: EF 500mm f/4L IS II USM, a $9000, 7 lb monster that works best with a tripod and gimbal for a stable platform, or at least a monopod, although can be hand-held if you have the arms for it.
For more economical lenses, have a look at used and / or older, discontinued models.
This is great advice. A $9,000 virtually unusable lens vs. and old used lens.