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Sigma 17-50mm F2.8 EX DC OS HSM Lens
For Pentax K Mount
Image Stabilized Lens
Zoom Lens
Rectilinear are normal lenses that show straight lines as straight lines.
Thread size in milimeters for screw-on filters.77
Autofocus LensLens Description
The Sigma 17-50mm F2.8 EX DC OS HSM is a wide to short telephoto zoom designed for cameras with a APS-C (1.5X) sensor. This bright constant-aperture zoom covers a 17 to 50mm focal-range. It provides the same field of view as a 25.5-75mm lens on a Full-Frame camera. An optical Image Stabilization System built into this lens compensates for camera shake.
This 3X zoom lens focuses down to 28cm from the imaging plane, capturing subject with a maximum 0.2X magnification. The lens supports autofocus and features a switch to disengage AF for focusing manually. A Super-Sonic motor inside the lens delivers very fast and relatively quiet AF.
The lens weighs 565g.
This version of the lens has a Pentax K mount. It directly attaches and is fully compatible with all Pentax K mount cameras with APS-C (1.5X) sensors. Sigma also makes this lens for Canon EF, Nikon F, Sony A and Sigma S mounts.
Focal-Range
Angle-Of-View
Maximum Aperture
Viewing Angle Range
Maximum Aperture
Magnification
Weight
Sigma 17-50mm F2.8 EX DC OS HSM Specifications
| Brand | Sigma | Model | 17-50mm F2.8 EX DC OS HSM |
|---|---|---|---|
| Mount | Max FLM | 1.5X | |
| Focal Range | 17 - 50mm | View Angle | 72 - 28° |
| Max Aperture | F/2.8 | Min Aperture | F/22 |
| Min Focus | 28cm | Magnification | 0.2X |
| Filter Size | 77mm | Aperture Blades | 7 |
| Size (D x L) | 84 x 92mm | Weight | 565g |
| Tilt | N / A | Shift | N / A |
| Stabilization | Built-In | Protection | None |
| Zoom Drive | Mechanic | Focus Drive | AF with MF Switch |
| Zoom Mechanism | External | Focus Mechanism | External |
| Hood | Bayonet | Focus Motor | Super Sonic |
| Perspective | Rectilinear | Introduced | 2010-02-20 |
Similar Lenses For Pentax K Mount
Here are the newest lenses matching or exceeding major specifications of the Sigma 17-50mm F2.8 EX DC OS HSM. They cover the same focal-range with a similar aperture and are available for the same lens mount and imaging circle coverage.
Sigma C 18-300mm F/3.5-6.3 DC Macro OS HSM
Sigma C 18-200mm F/3.5-6.3 DC Macro OS HSM
Sigma 18-250mm F/3.5-6.3 DC OS HSM Macro
Sigma 18-200mm F/3.5-5.6 DC OS HSM II
Sigma 18-250mm F3.5-6.3 DC OS HSM
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Sigma 17-50mm F/2.8 Facts
Image Stabilized LensZoom LensRectilinear are normal lenses that show straight lines as straight lines.Thread size in milimeters for screw-on filters.77Autofocus Lens| 17-50mm Focal-Range | F/2.8 Constant Aperture |
| 77mm Filter Thread | AF with MF Switch |
| Pentax K Mount | APS-C (1.5X) Coverage |
| 565g Lens Weight | 84 x 92mm (D x L) |
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