Anyone know how does this lens perform on a D800+TC??
Hahaha, why yes, yes, I do. lol. Got the Sigma APO DG EX 2x TC for my birthday. Went to ridgefield! Will say, it's a lot harder to use than the bare lens. AF slows down a bit, doesn't track super well, that's for sure. Gotta get the shutter speed up (still getting used to that). All my stuff was hand held, I need a mono pod or something and I think I'd get a much larger keeper rate. However, I got some great ones. Now, this was with D800 and the 120-300 OS and the 2x...at 600mm, this was ISO 3200 as it was dark:
link to larger: http://amanathia.zenfolio.com/img/s2/v53/p517469463-6.jpg