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Sigma 18-50mm F2.8 DC DN Contemporary L-Mount Review

Sigma 18-50mm F2.8 DC DN Contemporary

Main Features

  • 18-50mm Focal Range
  • F2.8 Max Aperture
  • Weather Sealed
  • Filter Thread: 55mm
  • Max Format: APS-C / DX
  • Leica L Mount
  • Weight: 290g.
  • Diameter: 65mm
  • Length: 75mm
  • Min Focus Distance:0.12m
  • Max Magnification:0.36x
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Sigma 18-50mm F2.8 DC DN C Overview

Sigma 18-50mm F2.8 DC DN C is an Auto Focus (AF) Standard Zoom lens with APS-C / DX max sensor coverage and it is designed to be used with Leica L mount cameras.

Lens Mount

Sigma 18-50mm F2.8 DC DN C is compatible with cameras that have Leica L lens mount. Some of the latest released cameras that are compatible with the Leica L lenses are Leica TL2, Leica TL and Leica T Typ 701.

Sigma 18-50mm F2.8 DC DN C is also available in Sony E mount.

Focal Range

Sigma 18-50mm F2.8 DC DN C has a focal range of 18-50mm and 2.8X zoom ratio which has a 35mm equivalent focal range of 27-75mm when used on a APS-C / DX format camera.


Weather Sealings

Sigma 18-50mm F2.8 DC DN C is a weather sealed lens which provides an extra protection to prevent water and dust get inside the lens and camera body under light rain, snow and wind. In order to have an effective protection, you have to pair the Sigma 18-50mm F2.8 DC DN C with a weather sealed camera body such as , and .

Optical Image Stabilization

Sigma 18-50mm F2.8 DC DN C 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 18-50mm F2.8 DC DN C 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 18-50mm F2.8 DC DN C has a Max Magnification Ratio of 0.36x and has a minimum focusing distance of 0.12m. For a non-macro lens, the 0.36x is considered a high magnification and will come handy for close-up shots.

Aperture

Sigma 18-50mm F2.8 DC DN C is a fixed aperture lens with a constant max aperture of f2.8 from 18mm all the way to the 50mm .

Optical Formula

Sigma 18-50mm F2.8 DC DN C's optical formula consists of 13 elements in 10 groups . Following special elements are used in this design:

  • 1 Super Low Dispersion
  • 3 aspherical elements

Lens Hood

Sigma 18-50mm F2.8 DC DN C comes with a removable lens hood which is handy to reduce lens flare and glare in your photos. The model number of the hood is LH582-02.

https://cameradecision.com/lenses/img/other/Sigma-18-50mm-F2.8-DC-DN-Contemporary-L-Mount-hood.jpg
Sigma 18-50mm F2.8 DC DN C Lens Hood


Body Colour

Sigma 18-50mm F2.8 DC DN C is available in color.

Popular Comparisons of Sigma 18-50mm F2.8 DC DN C

Here is the eight most popular comparisons of Sigma 18-50mm F2.8 DC DN C amongst Camera Decision readers.

Top Alternatives of Sigma 18-50mm F2.8 DC DN C Lens
Model Coverage Weight Focusing Street Price
Fujifilm XF 18-55mm F2.8-4 R LM OIS Lens Fujifilm XF 18-55mm F2.8-4 R LM OIS
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APS-C / DX 310gr AF Amazon B&H Photo
Panasonic Lumix S 20-60mm F3.5-5.6 Lens Panasonic Lumix S 20-60mm F3.5-5.6
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35mm FF 350gr AF Amazon B&H Photo
Sigma 28-70mm F2.8 DG DN C Lens Sigma 28-70mm F2.8 DG DN C
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35mm FF 470gr AF Amazon B&H Photo
Sigma 28-70mm F2.8 DG DN C Lens Sigma 28-70mm F2.8 DG DN C
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35mm FF 470gr AF Amazon B&H Photo
Fujifilm XF 16-55mm F2.8 R LM WR Lens Fujifilm XF 16-55mm F2.8 R LM WR
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APS-C / DX 655gr AF Amazon B&H Photo
Sony FE 28-70mm F3.5-5.6 OSS Lens Sony FE 28-70mm F3.5-5.6 OSS
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35mm FF 295gr AF Amazon B&H Photo
Sony E 18-135mm F3.5-5.6 OSS Lens Sony E 18-135mm F3.5-5.6 OSS
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APS-C / DX 325gr AF Amazon B&H Photo
Sigma 50mm F1.4 DG HSM A Lens Sigma 50mm F1.4 DG HSM A
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35mm FF 815gr 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 18-50mm F2.8 DC DN Contemporary


PROs
Weather Sealed
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
Lens Extents while focusing
Sigma 18-50mm F2.8 DC DN Contemporary Alternatives in Leica L Mount
Model Coverage Weight Focusing Street Price
Panasonic Lumix S 20-60mm F3.5-5.6 Lens Panasonic Lumix S 20-60mm F3.5-5.6
Compare
35mm FF 350gr AF Amazon B&H Photo

Sigma 18-50mm F2.8 DC DN C Detailed Specifications


General
Brand Sigma
Lens Type Zoom
Lens Type Standard Zoom
Lens Mount Leica L
Max Format APS-C / DX
Focal Range 18-50mm
Image Stabilization No
Colour Black
Zoom Method Rotary (extending)
Power Zoom No
Zoom Lock No
Zoom Ratio 2.8X
APERTURE
Max Aperture F2.8
Min Aperture F22
Aperture Ring No
Diaphragm Blades 7
Optics
Optical Elements 13
Optical Groups 10
Special Elements 1 Super Low Dispersion and 3 aspherical elements

FOCUSING
Min Focus Distance 0.12m
Max Magnification 0.36X
Autofocus Yes
AF Motor Type Stepper motor
Focus Method Internal
Distance Scale No
DoF Scale No
PHYSICAL SPECS
Weight 290g
Diameter 65mm
Length 75mm
Weather Sealing Yes
Filter Thread 55mm
Filter Notes -
Hood Supplied Yes
Hood Code LH582-02
Tripod Collar No
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Frequently Asked Questions about Sigma 18-50mm F2.8 DC DN Contemporary
is the Sigma 18-50mm F2.8 DC DN Contemporary a Weather Sealed lens?
What is the Minimum Focusing Distance of Sigma 18-50mm F2.8 DC DN Contemporary
is the Sigma 18-50mm F2.8 DC DN Contemporary an Autofocus (AF) lens?
What is the Filter Thread Size of Sigma 18-50mm F2.8 DC DN Contemporary
Does Sigma 18-50mm F2.8 DC DN Contemporary have Image Stabilization?
Does Sigma 18-50mm F2.8 DC DN Contemporary have Aperture Ring?
What is the Maximum Magnification Ratio of Sigma 18-50mm F2.8 DC DN Contemporary
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