Product Description

This compact high-performance telephoto zoom lens incorporates Sigma’s own Optical Stabilizer function. The lens incorporates SLD (Special Low Dispersion) glass in the front lens groups and is equipped with an inner focusing system to provide high image quality throughout the entire zoom range. The incorporation of HSM (Hyper-Sonic Motor) ensures quiet and high-speed auto focus. The OS (Optical Stabilizer) function effectively eliminates the effects of camera shake so subjects can be easily and clearly seen in the viewfinder as well as in the image. It allows the use of shutter speeds up to 4 stops slower than normal for steady, handheld photography. For Sony and Pentax mounts the built-in OS System allows the photographer to see the stabilized image in the viewfinder and can be used as an alternative with cameras having built-in image stabilization. The Super Multi-Layer Coating reduces flare and ghosting and provides high contrast images throughout the entire zoom range. This lens has a minimum focusing distance of 43.3inches (110cm) throughout the entire zoom range and a maximum magnification ratio of 1:4.5. An inner focusing system eliminates front lens rotation, making it suitable for use with circular polarizing filters.

Product Details

• Amazon Sales Rank: #132341 in Camera & Photo
• Brand: Sigma
• Model: 50-200mm OS Pentax
• Dimensions: 4.00" h x 2.90" w x 2.90" l, 1.00 pounds

Customer Reviews

Good budget telephoto option
Sigma has delivered very good product in this segment, much better than the cheapo 55-250mm from Canon. Good build, nice features (HSM, IS, IF design). And the lens is sharp in lower focal lengths and good bokeh. Only downside is that the lens is not sharp at longer focal lengths, but still very usable.

Sigma 50-200mm OS lens
This lens seems to be very good. Barrel and pin cushion aren't even noticeable, bokeh is very nice, and the lens seems quite sharp in the limited tests I've done so far.Sigma 50-200mm f/4.0-5.6 DC IF SLD Optical Stabilized (OS) Lens with Hyper Sonic Motor (HSM) for Sigma Digital SLR Cameras