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


Updates:
10/19/2021: Addition of images from the gallery

(From the Sigma lens literature) SIGMA’s first APS-C sized mirrorless zoom lens features a versatile 27-75mm full-frame equivalent zoom range, making 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 close-up macro style photography thanks to its maximum magnification of 1: 2.8 * 1 and minimum focus distance of just 12.1cm. The bright F2.8 aperture facilitates handheld shooting in low light and offers shallow depth of field for high impact results.

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

* 1 Minimum focus distance and maximum magnification ratio are the two values ​​at the wide end.
* 2 Please switch to APS-C cropping mode when used on full frame cameras.

Main characteristics

  • Large F2.8 aperture and superb image quality

The SIGMA 18-50mm F2.8 DC DN | Contemporary covers 27mm to 75mm in 35mm format and has a large aperture of F2.8 across the zoom range. This makes it easy to achieve blurry backgrounds, which is ideal for taking attractive portraits and close-ups. The bokeh is smooth and attractive, so it doesn’t distract from the subject in focus.

The lens’s three high-precision glass-molded aspherical elements, combined with minimizing the total number of elements, deliver superb optical quality without excessive weight, and the use of in-camera aberration correction photo further eliminates optical imperfections such as distortion and vignetting. This was all made possible by the latest optical design technology from SIGMA’s only production base in Aizu, where all SIGMA lenses are manufactured.

  • 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 lens for everyday use. The lens is currently the smallest and lightest in its class * 1, with a maximum diameter of φ65.4mm, length of 74.5mm and weight of 290g * 2, while maintaining a constant aperture of F2.8.

To keep the lens as light as possible, SIGMA built the body from carefully selected materials. A polycarbonate called Thermally Stable Composite (TSC) was used for the construction of the barrel, which is elegant, sturdy and above all 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 part of the internal structure, the parts could be much thinner and have higher rigidity, ensuring that the lens can withstand frequent and heavy use.

* 1 As AF-compatible F2.8 constant aperture zoom lens for APS-C (as of October 2021, by SIGMA)
* 2 Values ​​are for L mount.

  • Support various shooting situations

The SIGMA 18-50mm F2.8 DC DN | Contemporary features fast, near-silent autofocus that makes it ideal for a range of photographic applications, including shooting in calm environments, recording videos, and capturing fast moving subjects. This was achieved by using a stepper motor as the AF actuator. Since it is small and light, it can be flexibly used in situations such as handheld shooting, which requires high mobility, gimbal shooting, one-man video shooting and vlogging.

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 focus distance of 12.1cm and magnification. maximum of 1: 2.8 *, which also makes it ideal for close-ups.
* Minimum focus distance and maximum magnification are the two values ​​at the wide end.

Combined with the SIGMA fp “Pocketable Full-Frame”, the total weight is only 712g, and it can also be useful as a secondary lens for full frame cameras (used in crop mode) to reduce weight.

The 18-50 mm F2.8 DC DN | Contemporary, which combines compactness, lightness, high performance and large aperture, supports a variety of shooting situations, from the first single-lens mirrorless cameras to video shooting and combination with full cameras. format.

Example of lens used in combination with full frame APS-C format cameras

SIGMA fp L
Effective Pixels – Approx. 61 seats

SIGMA fp
Effective Pixels – Approx. 24.6 MP

Crop setting

6.2K crop (equivalent to approx.1.5 lens focal length)

APS-C crop (equivalent to approx.1.5 lens focal length)

Recording pixels of still images

6,240 x 4,144

3,840 x 2,560

Video recording pixels

3,840 x 2,160 (UHD 4K)

3,840 x 2,160 (UHD 4K)

Additional features

  1. Lens construction: 13 elements in 10 groups, with 1 SLD and 3 aspherical elements
  2. Internal focusing system
  3. Compatible with high speed autofocus
  4. Step-by-step engine
  5. Compatible with lens aberration correction
  6. DMF and AF + MF support
  7. Super multilayer coating
  8. Petal type sun visor (LH582-02)
  9. Mount with dust and splash resistant structure
  10. Compatible with SIGMA USB DOCK UD-11 (sold separately / for L mount only)
  11. Designed to minimize glare and ghosting
  12. Each lens is subjected to SIGMA’s exclusive MTF measurement system
  13. 7-blade rounded diaphragm
  14. High precision and durable brass bayonet mount
  15. Crafts “Made in Japan”

Pricing and availability

The SIGMA 18-50mm F2.8 DC DN | Contemporary will be available in the United States from SIGMA authorized resellers for a retail price of $ 549 near end of October 2021.

Sigma
18-50mm F2.8 DC DN Contemporary

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