Hi Andy,Ideal focal length on my XTi. Fast, with good contrast.
It it was socially acceptable to walk onto any performance stage to
get good close-ups of performers, I'd be tempted to dump all other
lenses, and keep the Sigma.
What do you mostly use this lens for (portraits, group shots, landscapes, lowlight, etc.)? Also, what aperture do you find is your favorite or that you find yourself mostly using?
Thanks,
abana