CONTEMPORARY 18-50mm F2.8 DC DN

contemporary

18-50mm F2.8 DC DN

Available mounts

L-Mount

Sony E-mount

FUJIFILM X Mount

Canon RF Mount

Smallest and lightest F2.8 standard zoom for APS-C mirrorless
Full-frame equivalent zoom range of 27–75mm
High-speed autofocus with stepping motor
Compatible with lens aberration correction*
Minimum focusing distance of 12.1cm / 4.8 in.
Mount with dust and splash-resistant structure
High-precision, durable brass bayonet mount
Designed to minimize flare and ghosting
Thermally Stable Composite (TSC) construction
Made in Japan

*Function available on supported cameras only. Available corrections / functionality may vary depending on camera model.

SPECIFICATIONS

FEATURES

LENS CONSTRUCTION / MTF

TECHNOLOGY

SAMPLE IMAGES

Camera Type Mirrorless

Corresponding Mount L-Mount, Sony E-mount, FUJIFILM X Mount, Canon RF Mount

Sensor size APS-C [DC]

Lens Construction 10 groups, 13 elements (1 SLD and 3 aspherical lenses)

Angle of View L-Mount：76.5°（W）-31.7°（T）
Sony E-mount：76.5°（W）-31.7°（T）
FUJIFILM X Mount：76.5°（W）-31.7°（T）
Canon RF Mount：73.4°（W）-30.0°（T）

Number of Diaphragm Blades 7 (rounded diaphragm)

Minimum Aperture F22

Minimum Focusing Distance 12.1（W）-30（T）cm / 4.8（W）-11.9（T）in.

Maximum Magnification Ratio Wide: 1:2.8
Tele: 1:5

Filter Size φ55mm

Dimensions (Diameter × Length) L-Mount：φ65.4mm × 74.5mm / φ2.6in. × 2.9in.
Sony E-mount：φ61.6mm × 76.5mm / φ2.4in. × 3.0in.
FUJIFILM X Mount：φ61.6mm × 76.8mm / φ2.4in. × 3.0in.
Canon RF Mount：φ69.2mm × 74.5mm / φ2.7in. × 2.9in.

Weight (g) L-Mount：290g / 10.2oz.
Sony E-mount：290g / 10.2oz.
FUJIFILM X Mount：285g / 10.1oz.
Canon RF Mount：300g / 10.6oz.

Edition Number C021

The three-digit code on the surface of the lens is to indicate the year the lens was first released. (Since it is different from the year of manufacture, the release year and edition number may not match depending on the mount.)

Supplied Accessories LENS HOOD LH582-02, FRONT CAP LCF-55mm III, REAR CAP LCR II

EAN L-Mount：00-85126-58569-3
Sony E-mount：00-85126-58565-5
FUJIFILM X Mount：00-85126-58575-4
Canon RF Mount：00-85126-58572-3

Camera Compatibility LINK

* L-Mount is a registered trademark of Leica Camera AG.
* Sony E-mount is developed, manufactured and sold based on the specifications of E-mount which was disclosed by Sony Corporation under the license agreement with Sony Corporation.
* Canon RF Mount is developed, manufactured and sold under license from Canon Inc.

Camera	SIGMA fp L
Shutter Speed	1/1250s
Lens F Number	F2.8
ISO	100
Focal Length	18mm
Photographer	Aya Iwasaki

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Camera	SIGMA fp L
Shutter Speed	1/250s
Lens F Number	F4.5
ISO	100
Focal Length	50mm
Photographer	Aya Iwasaki

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Camera	SONY α6600
Shutter Speed	1/800s
Lens F Number	F4
ISO	100
Focal Length	50mm
Photographer	Damien Dohmen

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Camera	SONY α6600
Shutter Speed	1/500s
Lens F Number	F4
ISO	100
Focal Length	50mm
Photographer	Damien Dohmen

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Camera	SONY α6500
Shutter Speed	1/200s
Lens F Number	F2.8
ISO	250
Focal Length	28.4mm
Photographer	Hsu Wu Te

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Camera	SONY α6600
Shutter Speed	1/1250s
Lens F Number	F7.1
ISO	400
Focal Length	40.5mm
Photographer	Jim Koepnick

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Camera	SONY α6600
Shutter Speed	1/250s
Lens F Number	F5.6
ISO	500
Focal Length	50mm
Photographer	Jim Koepnick

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Camera	Canon EOS R
Shutter Speed	1/320s
Lens F Number	F2.8
ISO	100
Focal Length	18mm (28.8mm in the 35mm format)
Photographer	Etsuko Aimu

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Camera	Canon EOS R
Shutter Speed	1/2000s
Lens F Number	F2.8
ISO	100
Focal Length	35mm (56mm in the 35mm format
Photographer	Etsuko Aimu

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Camera	Canon EOS R
Shutter Speed	1/4000s
Lens F Number	F4.5
ISO	100
Focal Length	19mm (30.4mm in the 35mm format)
Photographer	Etsuko Aimu

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Camera	Canon EOS R5
Shutter Speed	1/1250s
Lens F Number	F3.5
ISO	100
Focal Length	18mm (28.8mm in the 35mm format)
Photographer	Taichi Kozawa

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Camera	Canon EOS R5
Shutter Speed	1/800s
Lens F Number	F7.1
ISO	100
Focal Length	50mm (80mm in the 35mm format
Photographer	Taichi Kozawa

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Camera	Canon EOS R5
Shutter Speed	1/166s
Lens F Number	F2.8
ISO	400
Focal Length	50mm (80mm in the 35mm format）
Photographer	Taichi Kozawa

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Camera	Canon EOS R5
Shutter Speed	1/1250s
Lens F Number	F2.8
ISO	200
Focal Length	18mm (28.8mm in the 35mm format)
Photographer	Taichi Kozawa

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Camera	SONY α7R IV
Shutter Speed	1/125s
Lens F Number	F5
ISO	640
Focal Length	25.5mm
Photographer	Kazuyuki Hagiwara

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Camera	SIGMA fp
Shutter Speed	1/100s
Lens F Number	F2.8
ISO	800
Focal Length	50mm
Photographer	Hsu Wu Te

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Camera	SONY α6500
Shutter Speed	1/400s
Lens F Number	F5.6
ISO	200
Focal Length	18mm
Photographer	Andrew Stripp

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Camera	SONY α6500
Shutter Speed	1/125s
Lens F Number	F8
ISO	400
Focal Length	50mm
Photographer	Andrew Stripp

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Camera	SONY α7R IV
Shutter Speed	1/100s
Lens F Number	F2.8
ISO	100
Focal Length	50mm
Photographer	Kazuyuki Hagiwara

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Camera	Canon EOS R
Shutter Speed	1/4000s
Lens F Number	F2.8
ISO	100
Focal Length	50mm
Photographer	Etsuko Aimu

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Camera	Canon EOS R
Shutter Speed	1/4000s
Lens F Number	F2.8
ISO	100
Focal Length	50mm
Photographer	Etsuko Aimu

Download

Camera	Canon EOS R
Shutter Speed	1/2000s
Lens F Number	F2.8
ISO	800
Focal Length	18mm
Photographer	Etsuko Aimu

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Lens construction

SLD glass Aspherical lens
MTF Chart

The MTF (Modulation Transfer Function) is one of the measurements for evaluating a lens’ performance, and it shows how faithfully the contrast of the subject can be reproduced on the image plane. The horizontal axis shows the image height (distance from the center of the image in mm) and the vertical axis shows the contrast value (maximum value is 1).
The closer the 10 line pairs/mm curve is to 1, the higher the contrast and clarity of the lens is, and similarly, the closer the 30 line pairs/mm curve is to 1, the better the resolution and sharpness of the lens is.

*The MTF chart depicts the result at the wide-open aperture.
*For mirrorless lenses that support distortion correction, the horizontal axis shows the image height equivalent to when an L-Mount lens is attached to a Sigma L-Mount camera with distortion correction applied. (The effect of distortion correction may differ depending on the mount and camera used.)
*The spatial frequency indicates the variation on the image plane before distortion correction is performed.
Spatial frequency

S: Sagittal Line

M: Meridional Line
10lp/mm
30lp/mm
Diffraction MTF
$Diffraction MTF chart$
Diffraction MTF
$Diffraction MTF chart$
Geometrical MTF
Geometrical MTF

Large F2.8 aperture and superb image quality

The Sigma 18-50mm F2.8 DC DN | Contemporary covers 27mm to 75mm in the 35mm format, and has a wide aperture of F2.8 throughout the entire zoom range. This makes it easy to achieve blurry backgrounds, ideal for shooting attractive portraits and close-ups. The bokeh is smooth and pleasing, ensuring it doesn’t distract from the in-focus subject.

The lens’s three high-precision glass-molded aspherical elements coupled with the minimization of the total number of elements yield superb optical quality without excessive weight. The use of in-camera aberration correction further eliminates imperfections such as distortion and vignetting, made possible through Sigma’s latest optical design technology at its Aizu facility in Japan.
Exceptionally compact and lightweight body ideal for mirrorless cameras

The Sigma 18-50mm F2.8 DC DN | Contemporary is remarkably compact, matching the portability of APS-C mirrorless camera bodies. This makes it a perfect workhorse lens that is ideal for general day-to-day use. The lens is currently the smallest and lightest in its class^*1, boasting a maximum diameter of φ65.4mm, a length of 74.5mm and weight of 290g^*2 yet still maintains a constant aperture of F2.8.

To keep the lens as light as possible, Sigma constructed the body from carefully selected materials. A polycarbonate called Thermally Stable Composite (TSC) was used for the construction of the barrel, which is sleek, robust, and importantly has a thermal conductivity close to that of aluminum. This ensures stable performance and good operability when used in changing temperatures. By deliberately using metal for some of the internal structure, the parts could be much thinner and have a higher rigidity, ensuring the lens can stand up to frequent, heavy use.

*1 As an AF compatible, F2.8 constant aperture zoom lens for APS-C (as of October 2021, by Sigma)
*2 The values are for L-Mount.
Supports various shooting situations

The Sigma 18-50mm F2.8 DC DN | Contemporary has fast and near-silent AF that makes it perfectly suited to a range of photographic applications, including shooting in quiet environments, recording videos and capturing fast-moving subjects. This has been achieved by using a stepping motor as the AF actuator. Since it is small and lightweight, it can be used flexibly in situations such as handheld shooting, which requires high mobility, gimbal shooting, one-man operation video shooting and vlogging.

Combined with the “Pocketable Full-Frame” Sigma fp, the total weight is only 712g, and it can also be useful as a sub-lens for full-frame cameras (used in crop mode) to keep weight down. The 18-50mm F2.8 DC DN | Contemporary, which combines compactness, light weight, high performance, and large aperture, supports a variety of shooting situations, from introductory single-lens mirrorless cameras to video shooting and combination with full-frame cameras.
About the minimum focusing distance

With an emphasis on making the lens as versatile as possible in a wide variety of shooting conditions, Sigma designed the lens with a minimum focusing distance of 12.1cm and maximum magnification of 1:2.8*, making it also ideal for close-ups.

*The minimum focusing distance and maximum magnification are both values at the wide end. Remove the lens hood from the lens before use when photographing at the minimum focusing distance at the wide-angle end.
Examples of the lens used in combination with full-frame cameras in APS-C format

SIGMA fp L

Camera Effective Pixels Approx. 61 MP
Crop Setting : 6.2K crop
(Equivalent to approx. 1.5× the focal length of the lens)
Still image Recording Pixels : 6,240 × 4,144
Movie Recording Pixels : 3,840 × 2,160 (UHD 4K)

SIGMA fp

Camera Effective Pixels Approx. 24.6 MP
Crop Setting : APS-C crop
(Equivalent to approx. 1.5× the focal length of the lens)
Still image Recording Pixels : 3,840 × 2,560
Movie Recording Pixels : 3,840 × 2,160 (UHD 4K)

Stunning versatility.

A large F2.8 aperture zoom lens that need never leave your camera
This exceptionally small, light and bright standard zoom
for crop-sensor mirrorless cameras is the ultimate workhorse lens.

Sigma’s first APS-C size mirrorless zoom lens has a versatile full-frame equivalent zoom range of 27-75mm, which makes it ideal for a wide range of photo and video applications including landscapes, portraits, street photography, architecture and events. It can also be used for macro-style close-up photography owing to its maximum magnification of 1:2.8*1, which allows a minimum focusing distance of just 12.1cm. In terms of its bright F2.8 aperture, it makes for easier hand-held low-light shooting and provides a shallow depth-of-field for high-impact results.

Autofocus is exceptionally fast and quiet thanks to the stepping motor, which can be particularly useful when shooting video, or fast-moving subjects such as children and animals. The lens’ exceptionally small and light form factor that weighs less than 300g makes it perfect as a first interchangeable lens, and as a sub-lens for full-frame bodies *2, as well as for various shooting situations.

*1 The minimum focusing distance and maximum magnification ratio are both values at the wide end. *2 Please switch to APS-C crop mode when used on full-frame cameras.

ABOUT THREE LENS LINES