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The Sigma 105mm f/2.8 EX DG Macro Lens is - as you can discern from the name - Sigma's entry in the fixed short-telephoto focal length macro lens category. And in this case, Sigma means a true 1:1, close-up macro lens. Like most macro lenses (the Canon MP-E 65mm 1-5x Macro Lens excluded), this Sigma lens also can be used as a normal 105mm short telephoto lens.

Pop Photo Lens Review Pages. Thorough and impressive site.

Testing Canon EF 85mm f1.2 II, 50mm f1.2 and the Sigma 85 f1.4 I just got the chance to test out the Canon 85mm f1.2 II and 50mm f1.2. I also tested out the new Sigma 85mm f1.4 which is another lens I have been very interested in and that has been getting a lot of great praise. You can see some sample images at the bottom of the page after the review.

"A big stumbling block for many new camera users is how to figure out how much depth of field a particular image will have it in given the focal length of the lens, the aperture used and the distance to the subject. "