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.

Impression

©Jim Koepnick

©Damien Dohmen

©Hsu Wu Te

©Andrew Stripp

©Aya Iwasaki

©Kazuyuki Hagiwara

Features

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, which is ideal for shooting attractive portraits and close-ups. The bokeh is smooth and attractive so 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 yields superb optical quality without excessive weight, and the use of in-camera aberration correction further eliminates optical imperfections such as distortion and vignetting. This has all been made possible by the latest optical design technology at SIGMA’s only production base in Aizu, where all SIGMA lenses are built.

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

SIGMA fp
Camera Effective Pixels
Approx. 24.6 MP


Crop Setting : 6.2K crop
(Equivalent to approx.1.5 the focal length of the lens)
Crop Setting : APS-C crop
(Equivalent to approx.1.5 the focal length of the lens)

Still image Recording Pixels :
6,240 × 4,144
Still image Recording Pixels :
3,840 × 2,560

Movie Recording Pixels :
3,840 x 2,160 (UHD 4K)
Movie Recording Pixels :
3,840 x 2,160 (UHD 4K)                 

Additional features

Lens construction: 13 elements in 10 groups


Inner focus system


Compatible with high-speed autofocus


Stepping motor


Compatible with lens aberration correction

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

Support DMF and AF+MF


Super Multi-Layer Coating


Petal type lens hood(LH582-02)


Mount with dust and splash resistant structure


Compatible with SIGMA USB DOCK UD-11(sold separately / for L-Mount only)


Designed to minimize flare and ghosting


Every single lens undergoes SIGMA’s proprietary MTF measuring system


7-blade rounded diaphragm


High-precision, durable brass bayonet mount

Essentials

You'll find our philosophy and craftsmanship
in every product

Our new lineup fully expresses our approach to lenses and photography itself. All of our lenses belong to one of three lines—Art, Contemporary, or Sports—all of which share our development philosophy and advanced manufacturing system. High performance, high quality, and high end in every respect, these lenses give people who love photography lasting value and consistent, exciting results. The secret is our passion for craftsmanship that we put into every production process and every product.

Specifications

18-50mm F2.8 DC DN | Contemporary

Lens Construction

  • SLD glass
  • ASPHERICAL LENS

Lens Construction

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

Angle of View

  • 76.5°(W)-31.7°(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

1:2.8(W)-1:5(T)

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.
  • *The length of a lens is measured from the filter surface to its mount.

Weight

  • L-Mount
    290g / 10.2oz.
  • Sony E-Mount
    290g / 10.2oz.

Edition Number

C021

Supplied Accessories

Petal Type Hood (LH582-02) supplied.

Corresponding AF Mounts / Barcode No.

  • L-Mount
    00-85126-58569-3
  • Sony E-Mount
    00-85126-58565-5

Performance / Data

MTF Chart

Diffraction MTF

Geometrical MTF

The MTF chart gives the result at the wide-open aperture
Spatial frequency S:Sagittal Line M:Meridional Line
10lp/mm
30lp/mm

MTF chart guide

Product Lineup

18-50mm F2.8 DC DN | Contemporary

  • L-Mount

    Supplied Accessories

    Petal Type Hood (LH582-02) supplied.

    Barcode No.
    00-85126-58569-3
  • Sony E-mount

    Supplied Accessories

    Petal Type Hood (LH582-02) supplied.

    Barcode No.
    00-85126-58565-5

Accessories

Supplied Accessories

FRONT CAP LCF-55mmⅢ

Barcode No.
00-85126-93006-6

LENS HOOD LH582-02

Barcode No.
00-85126-93969-4

REAR CAP LCR Ⅱ

* The image is for SIGMA.

  • L-Mount

    Barcode No.
    00-85126-93725-6
  • Sony E-mount

    Barcode No.
    00-85126-92987-9

Separately Sold Accessories

USB DOCK UD-11

  • L-Mount

    Barcode No.
    00-85126-87869-6

WR PROTECTOR 55mm

Water-repellent, Antistatic type. Protector is developed to protect the lens surface from dirt and dust as well as scratches. It is an ideal filter for regular use as it is completely colorless so does not affect color reproduction.

* Thinner frame wide type.

Barcode No.
00-85126-93091-2

PROTECTOR 55mm

Normal type. Protector is developed to protect the lens surface from dirt and dust as well as scratches. It is an ideal filter for regular use as it is completely colorless so does not affect color reproduction.

* Thinner frame wide type.

Barcode No.
00-85126-93104-9

WR UV FILTER 55mm

UV Water-repellent, Antistatic type. UV filter prevents the bluish tone that generates when the weather is fine, by absorbing ultraviolet rays. It is effective in most situations, such as landscape, portrait and general photography on a sunny day. It is also an ideal filter for regular use as it is completely colorless so does not affect color reproduction.

* Thinner frame wide type.

Barcode No.
00-85126-93065-3

WR CIRCULAR PL FILTER 55mm

PL Water-repellent, Antistatic type. Circular PL filter removes the reflection of water surface and glass windows, and increases the contrast in landscape photography.

* Thinner frame wide type.

Barcode No.
00-85126-93078-3

Catalogs / Resources

Manuals / Brochures

Impressions / Samples