Review Lens: Sigma 17-50mm F2.8 EX DC OS HSM Sigma

Lens Overview - Sigma 17-50mm F2.8

Characterized by its versatile zoom range and bright design, the Canon EF-mount 17-50mm f/2.8 EX DC OS 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 while an Optical Stabilizer minimizes the appearance of camera shake for sharper handheld shooting. Additionally, 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 Canon EF-mount cameras and provides a 27.2-80mm 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.
Optical Stabilizer system minimizes the appearance of camera shake to benefit making sharper imagery when shooting handheld.
Rounded seven-blade diaphragm contributes to a pleasing bokeh quality.
UPC: 085126583545

Sigma 17-50mm F2.8 Latest Price



Focal Length17 to 50mm (35mm Equivalent Focal Length: 27.2 to 80mm)
Maximum Aperturef/2.8
Minimum Aperturef/22
Lens MountCanon EF
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
Weight1.2 lb / 565 g

Photos Example - Sigma 17-50mm F2.8

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Lens Technical

Sigma 17-50mm F2.8 EX DC OS HSM SigmaNikon NIKKOR Z 70-200mm f/2.8 VR SPentax HD FA 35mm F2
Name Sigma 17-50mm F2.8 EX DC OS HSM SigmaNikon NIKKOR Z 70-200mm f/2.8 VR SPentax HD FA 35mm F2
Max Aperture At Min Focal f/2.8f/2.8f/2.8
Year 201020192019
Mount Type Sigma SANikon ZPentax KAF
Lens Type Lens Superwide,lens Wide,lens MediumLens Medium,lens Telephoto,lens SupertelephotoLens Wide,lens Medium
Auto Focus NoNoNo
Price $669$2600$525
Lens Zoom ZoomZoomPrime
Lens Range 177035
Global 37.6706
Effective Mega Pixel 38.1202
Distorsion 0.347713
Vignetting -1.5856
Tstop 3.05506
Ac 4.97484
Vignetting Ranking 10464
Tstop Ranking 4344
Ac Ranking 1994
Pixel Depth 45.7
Price Sensor 3400
Sensor Raw 45.75
Sensor Format Sensor Fullframe
Type Hybrid
Zoom Factor 111
Weight 1lb1lb1lb
Macro NoNoNo
Launch Date Feb. 2010Feb. 2019Jan. 2019
Brand SigmaNikonPentax


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