It can be turned off completely, or set to one of two positions. The OS switch toggles the optical stabilization mode. Below that is a focus limiter-the lens can be set to cover the full range, only hunt from 10 meters to infinity, or only look for close subjects from the minimum 2.8-meter focus distance through 10 meters. The latter stands for manual override, which leaves the lens in autofocus mode, but allows you to adjust the focus manually after the camera has locked focus using the manual focus ring. The Focus switch has three positions-the self-explanatory AF and MF, as well as MO. Sigma includes a rubber ring to cover the indentation in which the collar sits for protection if you opt to remove it.Īhead of the collar are a number of switches. Its sits near the base of the lens and has a thumb screw to tighten to set it in position loosening the screw allows you to twist the collar, so you can switch between portrait and landscape orientation when working from a tripod or monopod. To that end, Sigma includes a removable tripod collar. With a lens this size you don't want to mount your camera directly on a tripod, as gravity will put some unnecessary stress on the lens mount. The weather was actually fairly cooperative when I was out with the 150-600mm Contemporary, but like most modern lenses I wouldn't hesitate to use it in moderate rain, though you should invest in a rain cover of some sort if you're looking to shoot in a downpour. The Contemporary lens has a seal around its lens mount, which is fine for moderate weather conditions, but the Sports lens is completely sealed-Sigma has a video that shows the larger lens being covered in a thick layer of dust and later drenched by water, with (presumably) no ill effect. So, what are you missing out on by opting for the smaller, less expensive of the pair? Aside from some back pain, you lose some optical correction (more on that later), and a design that's fully sealed against dust and splashes. The Sports edition, which also includes a reversible hood and extends when zoomed, is 11.4 by 4.8 inches (HD), 6.3 pounds, and has a 105mm filter thread around its front element. The included reversible lens hood adds about four inches of height, and the lens extends by about the same amount when zoomed to 600mm. The Contemporary version-available for Canon, Nikon, and Sigma SLRs at press time-measures 10.2 by 4.1 inches (HD) at its 150mm position, weighs about 4.3 pounds, and requires you to use a big 95mm filter if doing so suits your fancy. It's smaller, lighter, and less expensive than the 150-600mm f/5-6.3 DG OS HSM Sports ($1,999), but it doesn't look, feel, or perform like a budget lens. You'll be hard pressed finding a better lens with this much reach at this price, making the lens an easy pick for Editors' Choice.ĭesign and Controls The 150-600mm Contemporary ($824.00 at Amazon) is one of a pair of lenses from Sigma covering the same focal range. That's not a huge negative for the wildlife and sports shooters at which the lens is targeted, and it's tough to argue with the price-to-performance ratio that it delivers. Both lab and field tests proved that the lens is quite sharp, with just a little bit of chromatic aberration and pincushion distortion. A strong image stabilization system will helpyou get crisp handheld shots at slower shutter speeds when dealing with cooperative subjects. But that's no surprise when you consider its maximum reach, full-frame sensor coverage, and sturdy build. The Sigma 150-600mm f/5-6.3 DG OS HSM Contemporary ($1,089) is a big, heavy lens.
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