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Sigma 18-125mm F3.8-5.6 DC OS HSM Sigma SA Review

Sigma 18-125mm F3.8-5.6 DC OS HSM

Main Features

  • 18-125mm Focal Range
  • F3.8 - F5.6 Max Aperture
  • Image Stabilization
  • Filter Thread: 67mm
  • Max Format: APS-C / DX
  • Sigma SA Mount
  • Weight: 490g.
  • Diameter: 74mm
  • Length: 89mm
  • Min Focus Distance:0.35m
  • Max Magnification:0.26x
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Sigma 18-125mm F3.8-5.6 DC OS HSM Overview

Sigma 18-125mm F3.8-5.6 DC OS HSM is an Auto Focus (AF) Superzoom Zoom lens with APS-C / DX max sensor coverage and it is designed to be used with Sigma SA mount cameras.

Lens Mount

Sigma 18-125mm F3.8-5.6 DC OS HSM is compatible with cameras that have Sigma SA lens mount. Some of the latest released cameras that are compatible with the Sigma SA lenses are Sigma SD1 Merrill, Sigma SD1 and .

Sigma 18-125mm F3.8-5.6 DC OS HSM is also available in Canon EF and Nikon F (DX) mounts.

Focal Range

Sigma 18-125mm F3.8-5.6 DC OS HSM has a focal range of 18-125mm and 6.9X zoom ratio which has a 35mm equivalent focal range of 27-187.5mm when used on a APS-C / DX format camera.

Optical Image Stabilization

Sigma 18-125mm F3.8-5.6 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 Lock

Sigma 18-125mm F3.8-5.6 DC OS HSM has a Zoom lock feature which eliminates Zoom creep where focal length of the lens changes with gravity when it's held downwards or upwards.

Maximum Magnification Ratio

Sigma 18-125mm F3.8-5.6 DC OS HSM has a Max Magnification Ratio of 0.26x and has a minimum focusing distance of 0.35m. For a non-macro lens, the 0.26x is considered a high magnification and will come handy for close-up shots.

Aperture

Sigma 18-125mm F3.8-5.6 DC OS HSM is a variable aperture lens with a max aperture of f3.8 and a minimum aperture of f22 at 18mm, and a max aperture of f5.6 and minimum aperture of f36 at 125mm .

Optical Formula

Sigma 18-125mm F3.8-5.6 DC OS HSM's optical formula consists of 16 elements in 12 groups . Following special elements are used in this design:

  • 2 SLD (Special Low Dispersion) glass elements
  • 1 molded glass aspherical element 2 hybrid aspherical elements

Lens Hood

Sigma 18-125mm F3.8-5.6 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 18-125mm F3.8-5.6 DC OS HSM

Here is the eight most popular comparisons of Sigma 18-125mm F3.8-5.6 DC OS HSM amongst Camera Decision readers.

Top Alternatives of Sigma 18-125mm F3.8-5.6 DC OS HSM Lens
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APS-C / DX 628gr AF Amazon B&H Photo
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APS-C / DX 430gr 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.

Pros and Cons of Sigma 18-125mm F3.8-5.6 DC OS HSM


PROs
Image Stabilization
Built-in Autofocus
Hood supplied
Focus Distance Limiter
Zoom Lock
Versatile Lens with a Zoom Ratio of 6

CONs
No Weather Sealing
Lens Extents while focusing
Slow Aperture at Wide end
Slow Aperture at Tele end
Variable Aperture

Sigma 18-125mm F3.8-5.6 DC OS HSM Detailed Specifications


General
Brand Sigma
Lens Type Zoom
Lens Type SuperZoom
Lens Mount Sigma SA
Max Format APS-C / DX
Focal Range 18-125mm
Image Stabilization Yes
Colour Unknown
Zoom Method No Zoom
Power Zoom No Zoom
Zoom Lock Yes
Zoom Ratio 6.9X
APERTURE
Max Aperture F3.8 - F5.6
Min Aperture F22.0 - F36.0
Aperture Ring No
Diaphragm Blades 7
Optics
Optical Elements 16
Optical Groups 12
Special Elements 2 SLD (Special Low Dispersion) glass elements 1 molded glass aspherical element 2 hybrid aspherical elements

FOCUSING
Min Focus Distance 0.35m
Max Magnification 0.26X
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 490g
Diameter 74mm
Length 89mm
Materials metal mount
Weather Sealing No
Filter Thread 67mm
Filter Notes Does not rotate on focusing
Hood Supplied Yes
Tripod Collar No
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Frequently Asked Questions about Sigma 18-125mm F3.8-5.6 DC OS HSM
is the Sigma 18-125mm F3.8-5.6 DC OS HSM a Weather Sealed lens?
What is the Minimum Focusing Distance of Sigma 18-125mm F3.8-5.6 DC OS HSM
is the Sigma 18-125mm F3.8-5.6 DC OS HSM an Autofocus (AF) lens?
What is the Filter Thread Size of Sigma 18-125mm F3.8-5.6 DC OS HSM
Does Sigma 18-125mm F3.8-5.6 DC OS HSM have Image Stabilization?
Does Sigma 18-125mm F3.8-5.6 DC OS HSM have Aperture Ring?
What is the Maximum Magnification Ratio of Sigma 18-125mm F3.8-5.6 DC OS HSM
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