Shot these two today fell zoom with a Tamron 70-300. Am looking for a longer lens and while I'd like to have the Bigma, I don't wanna pay for that right now. Has anyone used the Sigma 170-500 lens? I can pick one up for around 300 bucks and from what I've read it's a pretty decent lens. Any ideas?
[attachment 14968 bird.jpg]
[attachment 14969 bird3.jpg]
[attachment 14968 bird.jpg]
[attachment 14969 bird3.jpg]