Since 1982, PCMag has tested and rated thousands of products to help you make better buying decisions. ( See how we test (Opens in a new window).) It doesn't offer quite the zoom range as the 18-55mm lens that likely came with your D-SLR, but it captures about four times the light on the wide end, and about six times as much at the 35mm setting. The 18-35mm zoom range is roughly equivalent to 27-52.5mm in full-frame terms, which captures a wide angle view when zoomed out, and narrows to a standard-angle when zoomed all the way in. This makes it an EF-S lens for Canon shooters, a DX lens for Nikon owners, and a DT lens for Sony D-SLR owners. It isn't compatible with full-frame bodies the image circle only covers an APS-C sensor. The lens is currently available to order in Sigma, Nikon, and Canon mounts, but Sigma also plans on offering it for Pentax and Sony/Minolta cameras. It stills earns high marks and our Editors' Choice award the lens is an accomplishment, and the fact that it doesn't come with a sky-high price tag means that more photographers will actually be able to shoot with it. It's impressively sharp, but it is a bit large compared with slower zooms or fast prime lenses, and its zoom range is modest at 1.9x. Sigma aims to change that with this lens. Or you can opt for a prime lens with a wide aperture, but it doesn't support zooming. You can go with a zoom lens and cover a range of focal lengths, but even top-end models only opened up to f/2.8. Prior to the introduction of the Sigma 18-35mm F1.8 DC HSM ($799 direct) lens shutterbugs with APS-C D-SLR cameras had to make a choice when it came to lens functionality.
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