MT Shooter wrote:
While I am a big fan of the Sigma 800mm F5.6 Prime, I am not that impressed with the 300-800mm F5.6 zoom. It is exceedingly heavy, never seemed as sharp as the prime at 800mm, and at 300mm F5.6 is a real light hog. It is still a very good bargain as it can be had for less than the Nikon or Canon 500mm F4 lenses.
Yep, I'm not about to lay down that kind of money without trying it out first. My thought is that 600mm is as much as I need, and I've heard that the 300-800 is pretty good in that range. Right now I'm doing okay with a 400 f/5.6 Tokina AT-X with a Sigma APO 1.4X teleconverter on a Df, but the 600 f/4.0 Nikkor's 2 stop increase over that is huge, especially for grey squirrels, who don't have sense enough to pose in the open. (Guess they don't trust me to scare the hawks off.) So I'm actually leaning towards the Nikkor, just have to keep on saving up my ducats.