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

BH #SI175028PE • MFR #58C109
Sigma
Sigma 17-50mm f/2.8 EX DC HSM Lens for Pentax K
Key Features
  • K-Mount Lens/APS-C Format
  • 25.5-75mm (35mm Equivalent)
  • Aperture Range: f/2.8 to f/22
  • Two FLD Elements
Characterized by its versatile zoom range and bright design, the Pentax K-mount 17-50mm f/2.8 EX DC HSM from Sigma covers a wide-angle to portrait-length range and features a constant f/2.8 maximum aperture to excel in available light conditions. The optical design incorporates a pair of low dispersion elements along with a trio of aspherical elements to reduce a variety of aberrations and promote greater sharpness and clarity. A Super Multi-Layer Coating is also used to suppress flare and ghosting for improved contrast and color accuracy. Benefitting the optics, a Hyper Sonic Motor affords quick and quiet autofocus performance and the lens is distinguished by its sleek profile, making it an ideal lens for walkaround and travel shooting.
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Sigma 17-50mm f/2.8 EX DC HSM Overview

Characterized by its versatile zoom range and bright design, the Pentax K-mount 17-50mm f/2.8 EX DC HSM from Sigma covers a wide-angle to portrait-length range and features a constant f/2.8 maximum aperture to excel in available light conditions. The optical design incorporates a pair of low dispersion elements along with a trio of aspherical elements to reduce a variety of aberrations and promote greater sharpness and clarity. A Super Multi-Layer Coating is also used to suppress flare and ghosting for improved contrast and color accuracy. Benefitting the optics, a Hyper Sonic Motor affords quick and quiet autofocus performance and the lens is distinguished by its sleek profile, making it an ideal lens for walkaround and travel shooting.

Standard zoom lens is designed for APS-C-format Pentax K-mount cameras and provides a 25.5-75mm equivalent focal length range.
Constant f/2.8 maximum aperture is well-suited for working in low-light conditions and also provides greater control over the focus position when using shallow depth of field techniques.
Two F Low Dispersion (FLD) elements are featured in the optical design, and help to reduce color fringing and chromatic aberrations for improved clarity and color accuracy.
Three aspherical elements are used to help limit distortion and spherical aberrations and also contribute to greater overall sharpness and accurate rendering.
Super Multi-Layer Coating has been applied to individual elements to minimize flare and ghosting for improved contrast and color accuracy when working in strong lighting conditions.
Hyper Sonic Motor (HSM), along with an internal focusing design, realizes quick and quiet autofocus performance as well as full-time manual focus override.
Minimum focusing distance of 11" and a 1:5 maximum magnification ratio benefits working with close-up subjects.
Rounded seven-blade diaphragm contributes to a pleasing bokeh quality.

Sigma 17-50mm f/2.8 EX DC HSM Specs

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°
Minimum Focus Distance11.02" / 28 cm
Maximum Magnification0.2x
Optical Design17 Elements in 13 Groups
Diaphragm Blades7, Rounded
Focus TypeAutofocus
Image StabilizationYes
Filter Size77 mm (Front)
Dimensions (ø x L)3.29 x 3.61" / 83.5 x 91.8 mm
Weight1.24 lb / 565 g
Packaging Info
Package Weight1.805 lb
Box Dimensions (LxWxH)5.7 x 4.85 x 4.65"
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Will this lens work with a Pentax K1000?

Will this lens work with a Pentax K1000?
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Physically, it will fit on your K1000 as Pentax has not changed the K Mount itself. It will be manual focus only, and the aperture will be "stuck" at wide open as there is no aperture ring on the lens. I believe it is also "made for APS-C", meaning that you may have dark edges to your photos as Your K-1000 is full frame. It is a great lens and I love it. If you are able to live with the limitations I just mentioned, yes it will work.
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Does this work with the Sony 6500? I also thought ...

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can I use this on Sony alpha 58? please do reply

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Does it come with a lens hood?
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Will this work with my sony a7ii?
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Oh okay, but wouldnt I be able to fix that with fixing APS-C settings on my camera?
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