Compact metal 20mm f/2 from Sigma
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.
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.
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 UK | sigma-imaging-uk.com
- Product information | sigma-global.com/en/lenses/c022_20_2
- SIGMA I series special page | sigma-global.com/en/special/i-series
- SIGMA craftsmanship | sigma-global.com/en/about/craftsmanship
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