As I might need to ditch Sigma 300-600mm F/4 in near future, I'm really curious about 300GM vs 100-400GM for sports. Tho I tried a new 100-400GM, I cant tell if it's really good or not.
arbitrage wrote:
I thought my Sony 200-600 was sharp for a telephoto lens above 200mm focal length until I got the 300 f2.8 for my A1Mk1. This is a godly lens. Auto focus is so fast, no focus breathing and super sharp.
I used it exclusively for finish line in high school track and field. Even when cropped in, it outshine the 200-600 set at 400mm on another A1Mk1 here:
