But, that was then, and this is now.
Since the passing of Mr. Yamaki, the founder of Sigma, his son, Kazuto Yamaki has taken over the helm at Sigma. We have already seen many changes from him and this is a good sign. I am excited about the new lenses that Sigma is introducing, for a few reasons. One of them is price. The Sigma 35mm f1.4 is about half the price of the Canon version. The other is optical performance. From the test performed by Roger, the Sigma is actually better than the Canon equivalent. Lastly, the aspect of connecting the lens to a computer and do all kinds of fine tuning intrigues me. Apparently, all new Sigma lenses can be tuned by the user with an optional USB dock. Even zooms can be adjusted for focus accuracy at different focal lengths! Imagine that.
Should I sell my Canon 35mm f1.4L? Likely not, since it's one of Canon best wide angle lenses. But if you are looking for a new lens, the Sigma is worth looking into.
Megan & William, 2007 - Canon 20D & EF 35mm f1.4L. Click for larger.