Bird Photography Equipment – Teleconverters for 7D and 5D MIII
10,000 Birds
JUNE 2, 2012
Recently I tried the Kenko C-AF 2X Teleplus Pro 300 DGX with my Canon 7D and the 300 f/4 lens. I had read that this was not possible since the 2X raised the f stop by two-stops making it a 300 f/8. In this particular case this combination raised the f stop to 8, as expected, but the camera was able to focus.
190 
Let's personalize your content