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Sigma 17-50mm f/2.8 EX DC HSM Lens for Pentax K

 
  • K-Mount Lens/APS-C Format
  • 25.5-75mm (35mm Equivalent)
  • Aperture Range: f/2.8 to f/22
  • Two FLD Elements
  • Three Aspherical Elements
  • Super Multi-Layer Coating
  • Hyper Sonic Motor AF System
  • Rounded 7-Blade Diaphragm
Lease to Own at
$38 /week or less
Availability: In stock
SKU
58C109

The Sigma 17-50mm f/2.8 EX DC HSM Zoom Lens for Pentax DSLRs W/APS-C Sensors is an incredibly versatile, lightweight, and compact lens designed specifically for Pentax digital SLR cameras with APS-C size sensors. The lens has a fast f/2.8 maximum aperture throughout the entire zoom range. It features a construction of 17 elements in 13 groups with glass that corrects for flare, ghosting and all types of aberrations. It produces high contrast and sharp images throughout the zoom range even at its maximum aperture.

This lens is also equipped with Sigma's Hyper-Sonic Motor (HSM) which provides for fast and quiet autofocusing.

The Sigma 17-50mm f/2.8 is ideal for many photo opportunities particularly landscapes and portraits, but with its wide focal range and a close focusing distance down to 11" (28cm) you can capture images with unique perspectives. It will quickly become one of the most important lenses in your gear bag.

Note: Vignetting will occur if the lens is used with digital cameras with image sensors larger than APS-C size or 35mm SLR cameras.

This lens is for use with Pentax digital cameras with APS-C size sensors only. 1
The DC designation on the barrel means that this is a special lens designed so that the image circle matches the smaller size (APS-C) of the image sensor of your digital SLR. Its specialized design gives this lens the ideal properties for digital cameras, including a compact size and lightweight construction.
Constructed with 17 elements in 13 groups, it features FLD ("F" Low Dispersion) glass which is the highest level low dispersion glass available with extremely high light transmission. This glass has a performance equal to fluorite glass which has a low refractive index and low dispersion compared to current optical glass. FLD glass offers superior optical performance, equal to fluorite, at an affordable price.
Its HSM (Hyper-Sonic Motor) ensures a quiet & high-speed auto focus.
Sigma lenses are made in Japan.
Performance
Focal Length 17 - 50mm
Aperture Maximum: f/2.8
Minimum: f/22
Camera Mount Type Pentax K
Format Compatibility Pentax Digital (APS-C)
Angle of View 72.4° - 27.9°
Minimum Focus Distance 11" (27.94 cm)
Magnification 0.2x
Maximum Reproduction Ratio 1:5
Elements/Groups 17/13
Diaphragm Blades 7
Features
Image Stabilization No
Autofocus Yes
Tripod Collar No
Physical
Filter Thread 77 mm
Dimensions (DxL) Approx. 3.3 x 3.6" (8.38 x 9.14 cm)
Weight 1.24 lb (565 g)
Packaging Info
Package Weight 1.85 lb
Box Dimensions (LxWxH) 5.6 x 4.8 x 4.7"
More Information
Specification
Focal Length17 to 50mm (35mm Equivalent Focal Length: 25.5 to 75mm)
Maximum Aperturef/2.8
Minimum Aperturef/22
Lens MountPentax K
Format CompatibilityAPS-C
Angle of View79.7° to 31.7°
Maximum Magnification0.2x
Minimum Focus Distance11.02" / 28 cm
Optical Design17 Elements in 13 Groups
Diaphragm Blades7, Rounded
Focus TypeAutofocus
Image StabilizationYes
Filter Size77 mm (Front)
Dimensions (ø x L)3.3 x 3.6" / 83.5 x 91.8 mm
Weight1.2 lb / 565 g
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