Upload & Sell: Off
I received mine yesterday. Haven't had much time to test it, and our weather is crazy, but o far I'm not felling the mega buck love... I've been shooting it almost exclusively at 560mm with my 5D3, so it's not a fair comparison, but I'm not having near the success that I have with my 100-400 in similar situations. The 200-400 was front focusing a little so I took a quick stab at correcting that, but I still didn't have a whole lot better luck today.
I'm sure that part of the problem is the size and weight of the 200-400, but I've been using a monopod most of the time. I can wield my 100-400 around hand held like a toy, but the 200-400 is a different story...
Any tips or suggestions would be greatly appreciated. I'm heading to the race track tomorrow for four days, so I'll get plenty of chance to test it then.
This first attached is uncropped at 560mm, 1/3200 second shutter with a monopod. Second attached is a 100% crop.