Sigma Contemporary 20mm F2 DG DN | L-Mount

Sigma Contemporary 20mm F2 DG DN | L-Mount

Sigma
SKU:
Sigma Contemporary 20mm F2 DG DN | L-Mount 490969
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£649.99 (Inc. VAT)
£541.66 (Ex. VAT)

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Description

Sigma Contemporary 24mm F2 DG DN - L-Mount

Introducing the all-new 20mm F2 DG DN | Contemporary from SIGMA. This ultra-compact, wide-aperture prime lens for E-mount and L-Mount systems is a game changer for mirrorless users needing a sharp, wide-angle optic that isn’t going to weight them down.

This portable, full-frame premium compact prime for mirrorless cameras is the seventh lens in SIGMA’s
fast-growing I series lineup, combining a bright maximum aperture of F2, an ultra-wide 20mm focal length
and stunning optical performance. It’s also the widest lens in the range so far, opening up new photographic possibilities for I series users.

The lens boasts an exceptionally small form factor, weighing in at just 370g and measuring just 72.4cm in length*, which makes it a highly practical optic that is portable enough for everyday shooting. It’s ideal for landscapes, wide-angle portraits, weddings and interiors, and is particularly well-suited to astrophotography owing to its very well-controlled sagittal coma flare. It’s the fourth I series lens with an F2 aperture, joining a 24mm, 35mm and 65mm, which together make a well-matched lens set for photographers who need both performance and portability in their kitbag. Remarkably, the 20mm F2 DG DN | Contemporary is almost identical in size and weight to the SIGMA 24mm F2 I series. Its sleek, all metal design, with a signature I series magnetic lens cap, a manual aperture ring and exceptional build quality makes using this lens is a highly intuitive and satisfying experience.

Highlights

1. I series – Premium Compact Primes for mirrorless users
 
The SIGMA I series features full-frame-compatible lenses that offer mirrorless users a new and better alternative, both in the experience of shooting with the lens and in the impressive results it is able to achieve.
One of the key advantages of mirrorless cameras is their smaller form-factor, and this new 24mm optic is designed to be perfectly matched to these more compact systems without sacrificing performance. This combination of superb optical quality with exceptional portability, not previously possible with DSLR systems, will bring new opportunities to this and future generations of photographers.
 
Simultaneously, SIGMA is aware that, in this day and age when we have such huge diversity when it comes to what we use to photograph, as represented by smartphones, people look for something more than a mere act of ‘taking pictures’ when they choose to own a camera and lenses.
 
SIGMA’s excellence in development and processing technologies has been built up since it was founded in 1961 – actually, this lens is being announced 60 years to the day since SIGMA’s story began – and has become further sophisticated with the introduction of the SIGMA Global Vision in 2012. With this as a base SIGMA has given careful thought to how photographers use and enjoy their lenses, including optical design, advanced functionality, build quality and the experience of picking up and using the lens, and with all of this carefully considered the I series was born.
 
2. New standards of optical performance for the Contemporary line

​The SIGMA 24mm F2 DG DN | Contemporary, like the SIGMA 35mm F2 DG DN | Contemporary and the SIGMA 65mm F2 DG DN | Contemporary, combines the highest level of optical performance even at its maximum aperture of F2 and a well-balanced body.

The lens uses two SLD glass elements and one FLD glass element to correct axial chromatic aberration, which is a particular concern with bright lenses. It also incorporates two high-precision glass-molded aspherical elements, made possible by the processing technology of SIGMA’s sole production facility in Aizu. This has enabled the total number of lens elements to be kept down and the size and weight of the lens to be reduced, while providing excellent correction of various aberrations.
In anticipation of wide-angle lens applications, SIGMA’s optical designers have ensured the lens resolution is extremely high, and is uniform from the center to the periphery of the image. Sagittal coma flare is also well suppressed, giving the lens a high degree of rendering power that makes it ideal for night sky photography.

The AF drive system incorporates a quiet, high-speed stepping motor. This allows photographers to capture every detail of the spacious 24mm scene with light AF.

3. Exceptional I series build quality with a compact form-factor

All I series lenses have an all-metal construction. The precision-cut aluminum parts not only give the barrel
a sleek, stylish finish, but provide superb durability that improves the quality of the entire product. Metal materials are also used in internal structures that slide with the operation ring for added robustness. These high-precision components crafted with SIGMA’s cutting-edge metalworking technology are also used in SIGMA’s cine lens line-up for professional cinematographers and provide a tactile, ergonomic feel that make the lens a pleasure to use.

The cover ring between the focus ring and the aperture ring has hairline processing that is also used for the rear cylinder of the Art line. This covering functions as a finger hold when attaching or detaching the lens.

 

 

  • Lens construction: 13 elements in 11 groups, with 1 FLD, 1 SLD and 3 aspherical elements
  • 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
  • Nano Porous Coating
  • Super Multi-Layer Coating
  • Aperture ring
  • Focus Mode Switch
  • Petal-type lens hood (LH656-03)
  • Magnetic metal lens cap (LCF62-01M)
  • Mount with dust and splash resistant structure
  • Support for switching between linear and non-linear focus ring settings (for L-Mount only)
  • Compatible with SIGMA USB DOCK UD-11 (sold separately / for L-Mount only)
  • Designed to minimise flare and ghosting
  • Every single lens undergoes SIGMA’s proprietary MTF measuring system
  • 9-blade rounded diaphragm
  • High-precision, durable brass bayonet mount
  • ‘Made in Japan’ craftsmanship
Lens construction 13 elements in 11 groups
Angle of view 94.5°
Number of diaphragm blades 9 (Rounded diaphragm)
Minimum aperture F22
Minimum focusing distance 22cm
Maximum magnification ratio 1:6.7
Filter size φ62mm
Dimensions (Maximum Diameter x Length) φ70mm×72.4mm