After seeing some of the pics on here....not sure if these are good enough. But this was the best I could get from my Sigma 70-300 DG and my D3200....the lens isnt the sharpest but keeping it between 100 and 250 and its not bad, and lightroom helped a bit in PP. I was aiming more for composition and capturing good moments than worrying too much about the tech though!
Giraffe by burgessanthony1988, on Flickr
Lemur by burgessanthony1988, on Flickr
? by burgessanthony1988, on Flickr
Penguin! by burgessanthony1988, on Flickr
Giraffe by burgessanthony1988, on Flickr
Lemur by burgessanthony1988, on Flickr
? by burgessanthony1988, on Flickr
Penguin! by burgessanthony1988, on Flickr