Thanks, its the Contemporary. I find sharpness to be pretty great. My technique for sharpening for the web, not so much. Tracking is so-so, but again my (lack of) technique probably plays a pretty significant role.
Thanks. I think these are plenty sharp, and good rendering. I have very old prejudice toward Sigma, but it seems no longer valid. It is good to know these are from the Contemporary version as sports are quite a bit more expensive.