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

Main Features

  • 17-50mm Focal Range
  • F2.8 Max Aperture
  • Image Stabilization
  • Filter Thread: 77mm
  • Max Format: APS-C / DX
  • Sigma SA Mount
  • Weight: 565g.
  • Diameter: 84mm
  • Length: 92mm
  • Min Focus Distance:0.28m
  • Max Magnification:0.2x
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Sigma 17-50mm F2.8 EX DC OS HSM Overview
Sigma 17-50mm F2.8 EX DC OS HSM is an Auto Focus (AF) Standard Zoom lens with APS-C / DX max sensor coverage and it is designed to be used with Sigma SA mount cameras.

Lens Mount

Sigma 17-50mm F2.8 EX DC OS HSM is compatible with cameras that have Sigma SA lens mount.Some of the latest released cameras with Sigma SA lens mount are Sigma SD1 Merrill, Sigma SD1 and .

Sensor Coverage

Max sensor coverage of Sigma 17-50mm F2.8 EX DC OS HSM is APS-C / DX.

Focal Range

Sigma 17-50mm F2.8 EX DC OS HSM has a focal range of 17-50mm and 2.9X zoom ratio. When mounted on a APS-C / DX format camera, it provides an 35mm (FF) equivalent of 25.5 - 75mm.

Optical Image Stabilization

Sigma 17-50mm F2.8 EX DC OS HSM features an optical image stabilization system which helps to reduce the blur that occurs due to shaking during hand-held shooting.

Zoom Method

Rotary (extending)

Aperture

Sigma 17-50mm F2.8 EX DC OS HSM has a constant max aperture of f2.8 from 17mm all the way to the 50mm .
Pros and Cons of Sigma 17-50mm F2.8 EX DC OS HSM

PROs
Image Stabilization
Built-in Autofocus
Hood supplied
Fast and Bright at Wide end
Fast and Bright at Tele end
Constant f2.8 Aperture throughout the range

CONs
No Weather Sealing
Lens Extents while focusing
Sigma 17-50mm F2.8 EX DC OS HSM Detailed Specifications

General
Brand Sigma
Lens Type Zoom
Lens Type Standard Zoom
Lens Mount Sigma SA
Max Format APS-C / DX
Focal Range 17-50mm
Image Stabilization Yes
Colour Unknown
Zoom Method Rotary (extending)
Power Zoom No Zoom
Zoom Lock No Zoom
Zoom Ratio 2.9X
APERTURE
Max Aperture F2.8
Min Aperture F22.0
Aperture Ring No
Diaphragm Blades 7
Optics
Optical Elements 17
Optical Groups 13
Special Elements 2 FLD glass elements 2 glass mold elements 1 hybrid aspherical lens

FOCUSING
Min Focus Distance 0.28m
Max Magnification 0.2X
Autofocus Yes
AF Motor Type Ultrasonic
Full Time Manual No
Focus Method Internal
Focus Distance Limiter No
Distance Scale Yes
DoF Scale No
PHYSICAL SPECS
Weight 565g
Diameter 84mm
Length 92mm
Materials Metal mount
Weather Sealing No
Filter Thread 77mm
Filter Notes Does not rotate on focusing
Hood Supplied Yes
Tripod Collar No
Sigma 17-50mm F2.8 EX DC OS HSM Alternatives in Sigma SA Mount
Model Coverage Weight Focusing Street Price
Sigma 18-50mm F2.8-4.5 DC OS HSM Lens Sigma 18-50mm F2.8-4.5 DC OS HSM
Compare
APS-C / DX 395gr AF Amazon B&H Photo
Frequently Asked Questions about Sigma 17-50mm F2.8 EX DC OS HSM
is the Sigma 17-50mm F2.8 EX DC OS HSM a Weather Sealed lens?
What is the Minimum Focusing Distance of Sigma 17-50mm F2.8 EX DC OS HSM
is the Sigma 17-50mm F2.8 EX DC OS HSM an Autofocus (AF) lens?
What is the Filter Thread Size of Sigma 17-50mm F2.8 EX DC OS HSM
Does Sigma 17-50mm F2.8 EX DC OS HSM have Image Stabilization?
Does Sigma 17-50mm F2.8 EX DC OS HSM have Aperture Ring?
What is the Maximum Magnification Ratio of Sigma 17-50mm F2.8 EX DC OS HSM
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