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Sigma 10-20mm F4-5.6 EX DC HSM Four Thirds Review

Sigma 10-20mm F4-5.6 EX DC HSM

Main Features

  • 10-20mm Focal Range
  • F4.0 - F5.6 Max Aperture
  • Filter Thread: 77mm
  • Max Format: APS-C / DX
  • Four Thirds Mount
  • Weight: 470g.
  • Diameter: 84mm
  • Length: 81mm
  • Min Focus Distance:0.24m
  • Max Magnification:0.15x
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Sigma 10-20mm F4-5.6 EX DC HSM Overview

Sigma 10-20mm F4-5.6 EX DC HSM is a Variable aperture Auto Focus (AF) Ultra-Wideangle Zoom lens with APS-C / DX max sensor coverage, and it is designed to be used with Four Thirds mount cameras.

What type of photography is the Sigma 10-20mm F4-5.6 EX DC HSM lens good for?

The type of photography that you are planning to use the Sigma 10-20mm F4-5.6 EX DC HSM is an important decision factor. Here we have evaluated its suitability to various photography scenarios:

Photography Type Suitability
Bird/WildlifePoor
SportsPoor
PortraitFair
TravelAverage
StreetAverage
WeddingFair
Walk AroundAverage
VloggingGood
LandscapeVery Good
MacroPoor

Reasons to Buy Sigma 10-20mm F4-5.6 EX DC HSM Lens

Here, we've included a summary of the advantages and disadvantages of the Sigma 10-20mm F4-5.6 EX DC HSM lens in a list form to help you determine whether it offers the features you need.

PROs
Autofocus
Distance Scale
DoF(Depth of Field) Scale
Hood supplied
Full-time Manual Focusing
Extreme Wide-angle capability
Minimum focus distance of 0.24m / 9.4 inch
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Buy Sigma 10-20mm F4-5.6 EX DC HSM from Amazon or B&H PHOTO


CONs
Lens Extents while zooming
Slow Aperture at Tele end
Variable Aperture

Lens Mount

Sigma 10-20mm F4-5.6 EX DC HSM is compatible with cameras that have Four Thirds lens mount. Some of the latest released cameras that are compatible with the Four Thirds lenses are , and .

Sigma 10-20mm F4-5.6 EX DC HSM is also available in Canon EF , Pentax KAF, Sony Alpha, 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 10-20mm F4-5.6 EX DC HSM has a maximum diameter of 84mm and total length of 81mm when not extended . It weighs 470g / 16.6 oz.

Sigma 10-20mm F4-5.6 EX DC HSM has a filter thread of 77mm.

Focal Range

Sigma 10-20mm F4-5.6 EX DC HSM has a focal range of 10-20mm and 2.0X zoom ratio which has a 35mm equivalent focal range of 15-30mm when used on a APS-C / DX format camera.

Optical Image Stabilization

Sigma 10-20mm F4-5.6 EX DC HSM doesn't have an optical image stabilization system so the only option to stabilize the image taken with this lens is to mount on a camera body with IBIS (sensor based In-body image stabilization).

Zoom Method

Sigma 10-20mm F4-5.6 EX DC 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 10-20mm F4-5.6 EX DC HSM has a Max Magnification Ratio of 0.15x and has a minimum focusing distance of 0.24m. 0.15x means that the max magnification ratio is very low and not suitable even for modest close-up shots.

Aperture

Sigma 10-20mm F4-5.6 EX DC HSM is a variable aperture lens with a max aperture of f4 and a minimum aperture of f22 at 10mm, and a max aperture of f5.6 and minimum aperture of f32 at 20mm .

Focal Length Max Aperture Min Aperture
10mm F4 F22
20mm F5.6 F32

Optical Formula

Sigma 10-20mm F4-5.6 EX DC HSM's optical formula consists of 14 elements in 10 groups . Following special elements are used in this design:

  • 3 SLD glass elements
  • 2 hybrid aspherical elements
  • 1 glass mold aspherical

Lens Hood

Sigma 10-20mm F4-5.6 EX DC HSM comes with a removable lens hood which is handy to reduce lens flare and glare in your photos.

Body Colour

Sigma 10-20mm F4-5.6 EX DC HSM is available in Black color.

Popular Comparisons of Sigma 10-20mm F4-5.6 EX DC HSM

Here is the eight most popular comparisons of Sigma 10-20mm F4-5.6 EX DC HSM amongst Camera Decision readers.

Top Alternatives of Sigma 10-20mm F4-5.6 EX DC HSM Lens
Model Coverage Weight Focusing Street Price
Olympus Zuiko Digital ED 9-18mm f4.0-5.6 Lens Olympus Zuiko Digital ED 9-18mm f4.0-5.6
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FourThirds 280gr AF Amazon B&H Photo
Olympus Zuiko Digital 11-22mm f2.8-3.5 Lens Olympus Zuiko Digital 11-22mm f2.8-3.5
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FourThirds 485gr AF Amazon B&H Photo
Nikon AF-P DX Nikkor 10-20mm F4.5-5.6G VR Lens Nikon AF-P DX Nikkor 10-20mm F4.5-5.6G VR
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APS-C / DX 230gr AF Amazon B&H Photo
Olympus Zuiko Digital ED 7-14mm f4.0 Lens Olympus Zuiko Digital ED 7-14mm f4.0
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FourThirds 780gr AF Amazon B&H Photo
Tokina AT-X Pro 12-24mm f4 DX II Lens Tokina AT-X Pro 12-24mm f4 DX II
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APS-C / DX 540gr AF Amazon B&H Photo
Nikon AF-S DX Nikkor 10-24mm f3-5-4.5G ED Lens Nikon AF-S DX Nikkor 10-24mm f3-5-4.5G ED
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APS-C / DX 460gr AF Amazon B&H Photo
Tokina AT-X Pro 11-16mm f2.8 DX II Lens Tokina AT-X Pro 11-16mm f2.8 DX II
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APS-C / DX 560gr AF Amazon B&H Photo
Tokina AT-X Pro 12-24mm f4 IF DX Lens Tokina AT-X Pro 12-24mm f4 IF DX
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APS-C / DX 570gr 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 10-20mm F4-5.6 EX DC HSM Alternatives in Four Thirds Mount
Model Coverage Weight Focusing Street Price
Olympus Zuiko Digital 11-22mm f2.8-3.5 Lens Olympus Zuiko Digital 11-22mm f2.8-3.5
Compare
FourThirds 485gr AF Amazon B&H Photo
Olympus Zuiko Digital ED 9-18mm f4.0-5.6 Lens Olympus Zuiko Digital ED 9-18mm f4.0-5.6
Compare
FourThirds 280gr AF Amazon B&H Photo

Sigma 10-20mm F4-5.6 EX DC HSM Detailed Specifications


General
Brand Sigma
Lens Type Zoom
Lens Type Wideangle Zoom
Lens Mount Four Thirds
Max Format APS-C / DX
Focal Range 10-20mm
Image Stabilization No
Colour Black
Zoom Method Rotary (extending)
Power Zoom No Zoom
Zoom Lock No Zoom
Zoom Ratio 2.0X
APERTURE
Max Aperture F4.0 - F5.6
Min Aperture F22.0 - F32.0
Aperture Ring No
Diaphragm Blades 6
Optics
Optical Elements 14
Optical Groups 10
Special Elements 3 SLD glass elements 2 hybrid aspherical elements 1 glass mold aspherical element

FOCUSING
Min Focus Distance 0.24m
Max Magnification 0.15X
Autofocus Yes
AF Motor Type Ring-type ultrasonic
Full Time Manual Yes
Focus Method Internal
Distance Scale Yes
DoF Scale Yes
PHYSICAL SPECS
Weight 470g
Diameter 84mm
Length 81mm
Materials metal mount
Weather Sealing Unknown
Filter Thread 77mm
Filter Notes does not rotate on focus
Hood Supplied Yes
Tripod Collar No
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Frequently Asked Questions about Sigma 10-20mm F4-5.6 EX DC HSM
is the Sigma 10-20mm F4-5.6 EX DC HSM a Weather Sealed lens?
What is the Minimum Focusing Distance of Sigma 10-20mm F4-5.6 EX DC HSM
is the Sigma 10-20mm F4-5.6 EX DC HSM an Autofocus (AF) lens?
What is the Filter Thread Size of Sigma 10-20mm F4-5.6 EX DC HSM
Does Sigma 10-20mm F4-5.6 EX DC HSM have Image Stabilization?
Does Sigma 10-20mm F4-5.6 EX DC HSM have Aperture Ring?
What is the Maximum Magnification Ratio of Sigma 10-20mm F4-5.6 EX DC HSM
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