Quote Originally Posted by pgomena View Post
... The 250mm is relatively compact, and isn't that heavy. It's mostly empty space surrounded by metal. The 350mm starts to get ridiculous in terms of size and weight.
I agree about the weight of the 250mm and the 350mm. I do not find the 250mm cumbersome and I do not have a problem hand holding it for 1/500 second and 1/250 second. I would use a tripod if the shutter speed was 1/125 second or longer.