Compact metal 20mm f/2 from Sigma

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The new 20mm f/2 DG DN Contemporary lens for full frame E and L mounts from Sigma will sell for under £650 in the UK from February 25th. It extends their compact, metal barrel prime ‘I’ series range which includes f/2 models in 24mm, 35mm and 65mm focal lengths.

Sigma I-series 20mm f/2 DG DN Contemporary

It also offers a filter-friendly alternative to the very large and heavy 20mm f/1.4 Art lens. It uses 62mm filters, weighs 370g and is just 72.4mm long (much the same as the 24mm f/2). It has a magnetic lens cap and all metal construction, including the bayonet lens hood. A second plastic clip-in lens cap is also supplied. The design with a physical aperture ring is similar to Sigma’s high-end ciné lenses.

The lens with its hood, seen here in ‘bare metal’ before the black coating is applied to the components.

It uses three high-precision glass-molded aspherical lens elements, one SLD element, and one FLD element. Suppression of sagittal coma flare makes the 20mm f/2 ideal for night sky with stars near the extreme corners of the field. 

Other specifications include:

  • Lens construction: 11 groups, 13 elements
  • Angle of view: 94.5 
  • 9 rounded diaphragm blades
  • Minimum aperture: f/22
  • Minimum focusing distance: 22cm
  • Maximum magnification ratio: 1:6.7
  • Inner focus system
  • Compatible with high-speed autofocus
  • Stepping Motor
  • Compatible with Lens Aberration Correction
  • 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 lens checked using proprietary MTF measuring system
  • High-precision, durable brass bayonet mount
  • Made in Japan

For further information:

#SIGMA #SIGMA20mmF2Contemporary #SIGMAContemporary #SIGMAContemporaryPrime #SIGMADGDN #Iseries #SIGMAIseries