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Kenneth Lauritzen

Morten H. Vorsaa

Lars Thestrup

Jakob Worre


SIGMA 20mm F2 DG DN | Contemporary - L-Mount

  • I series - Premium Compact Primes for mirrorless users
  • Exceptional optical performance 
  • Superb I series build quality in all-metal with a compact form-factor
  • Ultra-wide angle lens compatible with full-frame cameras
  • Minimum focusing distance of 22 cm
  • Mount with dust- and splash-proof structure
  • Magnetic Lens Cap and Metal Lens Hood

This full-frame premium compact prime for mirrorless systems combines a bright maximum aperture of F2, an ultra-wide 20mm focal length and stunning optical performance.
The lens boasts an exceptionally small form factor, weighing just 370g and measuring just 72.4 mm 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.

I series - “Premium Compact Primes” for mirrorless users

The SIGMA I series features full-frame compatible lenses that offer new value to mirrorless systems. The combination of superb optical performance with a level of compactness that is perfectly suited to smaller and lighter modern mirrorless cameras will bring you new opportunities for a perfect shot.

New standards of optical performance for the Contemporary line

The 20mm F2 DG DN | Contemporary achieves the highest level of optical performance even at the widest aperture setting of F2 from the center of the image to the periphery. Based on the latest optical design technology, the lens construction includes three high-precision glass-molded aspherical lens elements, one SLD element, and one FLD element to suppress a range of optical aberrations.
The result is clear and sharp images even in the extreme corners of the frame. By focusing on the suppression of sagittal coma flare, which is difficult to correct in post-processing, accurate reproduction of very bright points of light has been achieved. This also provides extremely detailed results across the entire image, which is especially important for night sky photography.

The lens’ optical design, as well as its Super Multi-Layer Coating and Nano Porous Coating (NPC), ensures very minimal flare and ghosting even when shooting into bright light sources. This makes it much easier to photograph backlit subjects and still achieve punchy, high contrast results.

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.


Producent Sigma
Kategori Objektiv
Objektiv type Prime
Brændvidde type Wide-angle
Objektiv mount L (Leica)
Kompatible mounts L (Leica/Panasonic/Sigma)
Fullframe Ja
Special elementer/coatings FLD, 1 SLD, 3 ASPH
Billedestabilisator Nej
Autofokus Ja
Vejrbestandig Ja
Intern fokus Ja
Modlysblænde LH656-03
Linseelement / Gruppe 13/11
Maks synsvinkel 94,5°
Nærgrænse 22 CM
Blændelameller 9 stk.
Største blænde F/2
Mindste blænde F/22
Brændvidde 20 mm
Diameter 70 MM
Længde 72.4 MM
Vægt 370 G
Filter diameter 62 mm