Need the advice from experienced photogs who shoot long distance (Nature, Fashion, paparazzi, etc).... which is the best choice and why?
A. EF300 IS USM
B. EF400 USM
X. 1.4x TC
Y. 2.0x TC
Ax, Ay, Bx, or By?
A. EF300 IS USM
B. EF400 USM
X. 1.4x TC
Y. 2.0x TC
Ax, Ay, Bx, or By?