hello,
how do you compare canon 300mm f/2.8 +canon 2x t.c. vs canon 500mm f/4 ? i know everybody will say 500mm is always better, but there are many plus points in 300mm. it is light, less conspicuous, more versatile,and much cheaper... and image quality with 2x t.c. suffers only in contrast and not in resolution..any opinions?