That sigmas sharpness wide-open looks very impressive. I also like the color rendering a lot. Not so sure about the bokeh on it, however. It's just something about it that I don't like. The transition is just not as smooth as what I like, but, to be fair, a lot of the shots were under similar conditions. I really, really like that there are a lot of shots taken wide-open. I'm not crazy about seeing a lot of stopped down shots on reviews or tests of large aperture primes. The reality is is that the majority of shots taken with those lens will be taken with a larger aperture. I'm very anxiously awaiting the actual reviews of both the Sigma and the Canon 35.