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Sigma 17-50mm F2.8 EX DC OS HSM Sony Alpha 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
  • Sony Alpha 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 a Fixed aperture Auto Focus (AF) Standard Zoom lens with Optical Image stabilization and APS-C / DX max sensor coverage, and it is designed to be used with Sony Alpha mount cameras.

What type of photography is the Sigma 17-50mm F2.8 EX DC OS HSM lens good for?

The type of photography that you are planning to use the Sigma 17-50mm F2.8 EX DC OS HSM is an important decision factor. Here we have evaluated its suitability to various photography scenarios:

Photography Type Suitability
Bird/WildlifeFair
SportsAverage
PortraitVery Good
TravelVery Good
StreetVery Good
WeddingVery Good
Walk AroundVery Good
VloggingVery Good
LandscapeVery Good
MacroFair

Lenses in Sony Alpha Mount with Same Focal and Aperture Range
Model Coverage Weight Focusing Street Price
Tamron SP AF 17-50mm F2.8 XR Di II LD Aspherical IF Lens Tamron SP AF 17-50mm F2.8 XR Di II LD Aspherical IF
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APS-C / DX 430gr AF Amazon B&H Photo

Reasons to Buy Sigma 17-50mm F2.8 EX DC OS HSM Lens

Here, we've included a summary of the advantages and disadvantages of the Sigma 17-50mm F2.8 EX DC OS HSM lens in a list form to help you determine whether it offers the features you need.

PROs
Optical Image Stabilization
Autofocus
Distance Scale
Hood supplied
Fast Aperture at Wide end
Fast Aperture at Tele end
Constant f2.8 aperture throughout the range
Minimum focus distance of 0.28m / 11.0 inch
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Buy Sigma 17-50mm F2.8 EX DC OS HSM from Amazon or B&H PHOTO


CONs
No Weather Sealing
Lens Extents while zooming

Lens Mount

Sigma 17-50mm F2.8 EX DC OS HSM is compatible with cameras that have Sony Alpha lens mount. Some of the latest released cameras that are compatible with the Sony Alpha lenses are Sony A68, Sony A77 II and Sony A58.

Sigma 17-50mm F2.8 EX DC OS HSM is also available in Canon EF , Pentax KAF3, Sigma SA and Nikon F (DX) mounts.

Size, Weight and Filter Thread

Size and weight is a very important decision factor when searching for your next lens. Sigma 17-50mm F2.8 EX DC OS HSM has a maximum diameter of 84mm and total length of 92mm when not extended . It weighs 565g / 19.9 oz.

Sigma 17-50mm F2.8 EX DC OS HSM has a filter thread of 77mm.

Focal Range

Sigma 17-50mm F2.8 EX DC OS HSM has a focal range of 17-50mm and 2.9X zoom ratio which has a 35mm equivalent focal range of 25.5-75mm when used on a APS-C / DX format camera.

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

Sigma 17-50mm F2.8 EX DC OS HSM features Rotary (extending) zoom method where the length of the lens changes as you zoom in or out. This makes it possible to design the lens with a smaller minimum length ( generally when it is zoomed out) compared to internal zoom lenses. The disadvantages of this design are being harder to seal against dust and moisture, weight balance shifting while zooming and zoom creep in certain lenses.

Maximum Magnification Ratio

Sigma 17-50mm F2.8 EX DC OS HSM has a Max Magnification Ratio of 0.2x and has a minimum focusing distance of 0.28m.

Aperture

Sigma 17-50mm F2.8 EX DC OS HSM is a fixed aperture lens with a constant max aperture of f2.8 from 17mm all the way to the 50mm .

Focal Length Max Aperture Min Aperture
17mm F2.8 F22
50mm F2.8 F22

Optical Formula

Sigma 17-50mm F2.8 EX DC OS HSM's optical formula consists of 17 elements in 13 groups . Following special elements are used in this design:

  • 2 FLD glass elements
  • 2 glass mold elements
  • 1 hybrid aspherical lens

Lens Hood

Sigma 17-50mm F2.8 EX DC OS HSM comes with a removable lens hood which is handy to reduce lens flare and glare in your photos.

Popular Comparisons of Sigma 17-50mm F2.8 EX DC OS HSM

Here is the eight most popular comparisons of Sigma 17-50mm F2.8 EX DC OS HSM amongst Camera Decision readers.

Top Alternatives of Sigma 17-50mm F2.8 EX DC OS HSM Lens
Model Coverage Weight Focusing Street Price
Sony DT 16-50mm F2.8 SSM Lens Sony DT 16-50mm F2.8 SSM
Compare
APS-C / DX 577gr AF Amazon B&H Photo
Sony DT 18-55mm F3.5-5.6 SAM II Lens Sony DT 18-55mm F3.5-5.6 SAM II
Compare
APS-C / DX 222gr AF Amazon B&H Photo
Tamron SP AF 17-50mm F2.8 XR Di II LD Aspherical IF Lens Tamron SP AF 17-50mm F2.8 XR Di II LD Aspherical IF
Compare
APS-C / DX 430gr AF Amazon B&H Photo
Sony DT 18-55mm F3.5-5.6 SAM Lens Sony DT 18-55mm F3.5-5.6 SAM
Compare
APS-C / DX 210gr AF Amazon B&H Photo
Sony DT 18-70mm F3.5-5.6 Lens Sony DT 18-70mm F3.5-5.6
Compare
APS-C / DX 235gr AF Amazon B&H Photo
Sony 28-75mm F2.8 SAM Lens Sony 28-75mm F2.8 SAM
Compare
35mm FF 565gr AF Amazon B&H Photo
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
Sony FE 28-60mm F4-5.6 Lens Sony FE 28-60mm F4-5.6
Compare
35mm FF 167gr AF Amazon B&H Photo

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**This post contains affiliate links and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.

Sigma 17-50mm F2.8 EX DC OS HSM Alternatives in Sony Alpha Mount
Model Coverage Weight Focusing Street Price
Sony DT 16-50mm F2.8 SSM Lens Sony DT 16-50mm F2.8 SSM
Compare
APS-C / DX 577gr AF Amazon B&H Photo
Sony DT 18-55mm F3.5-5.6 SAM Lens Sony DT 18-55mm F3.5-5.6 SAM
Compare
APS-C / DX 210gr AF Amazon B&H Photo
Sony DT 18-55mm F3.5-5.6 SAM II Lens Sony DT 18-55mm F3.5-5.6 SAM II
Compare
APS-C / DX 222gr AF Amazon B&H Photo
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
Tamron SP AF 17-50mm F2.8 XR Di II LD Aspherical IF Lens Tamron SP AF 17-50mm F2.8 XR Di II LD Aspherical IF
Compare
APS-C / DX 430gr AF Amazon B&H Photo

Sigma 17-50mm F2.8 EX DC OS HSM Detailed Specifications


General
Brand Sigma
Lens Type Zoom
Lens Type Standard Zoom
Lens Mount Sony Alpha
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
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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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