Looking for a zoom lens with atleast 300mm at the zoom end for my Canon
300D. Initially, I had made up my mind about the Tamron 70-300mm LD but
then noticed that the Canon 75-300mm has USM. Quickly went thru reviews
and realised that the Canon 100-300mm has true USM (ring-USM vs
micro-USM) and is optically rated better than the Canon 75-300mm. Some
even compared it to its "L" series sibling, the 100-400mm L.
Anyways, a few more reviews down the line, some opined that the Tamron
28-300mm XR is sharper at the 300mm end than the Canon 100-300mm. ...