DIYPhotography has completed an early review of the brand new Sigma 100-400mm f/5-6. 3 OS Contemporary lens. At $799USD, this lens looks to be an absolute steal. If you’re not all that interested in buying the $1999 Canon EF 100-400mm f/4.
5-5. 6L IS, this new Sigma may be what you’re looking for. From DIY Photography: Bottom line, I Read more. . . . canonrumors.com