I bought a Sigma 70-200 F2.8 a good while back and tbh never really been happy with the results I get with it.
My GF is into photography and got this shot with a Canon EOS 400D and a Canon 55-250 IS EF-S lens:
IMG_6199 by
_jenward, on Flickr
When I compare this to mine I'm just not happy, can never seem to get really sharp shots with good definition, here one of the better I have taken with it:
Canon EOS 50D with Sigma 70-200 F2.8:
IMG_3586 by
Adam Woodford, on Flickr
Im not sure what it is, technique/talent or lack of any stabilisation, or maybe the lens just isn't great...
What do people think?
Toying with the idea of changing it for a Canon EF 70-200mm F2.8 L IS II USM lens but at £1600 that's a fair wedge if it doesnt really help...