I finally took the plunge… and bought myself my first Canon “L” lens. After buying my Sigma 70-300mm lens more than a year ago, I found myself increasingly using such a focal length range for many of my shots (almost neglecting the 28-135mm lens that used to be my workhorse!). While the Sigma had good reach, it was a let down in the sharpness department when it came to apertures wider than f/8. The Canon 70-200mm f/4 L definitely has no such problems there! The only thing I will miss is the extra 100mm reach between 200-300mm…