Sigma

Adorama

Our Price

$629.00
Quantity:

Need Help? Call Our Experts!

800-223-2500 / 212-741-0052

Hours of operation

Item Includes Description Features Specifications

Sigma 20mm f/1.8 EX Aspherical DG DF RF AutoFocus Super Wide Angle Lens for Maxxum & Sony Alpha Mount, USA Warranty

Mfr. Part: 411205     SKU: SG2018MAX

Sigma 20mm f/1.8 EX Aspherical DG DF RF AutoFocus Super Wide Angle Lens for Maxxum & Sony Alpha Mount, USA Warranty
enlarge image

Free Shipping view details

Product Rating
(1 Rating)
41
Write a Review
Read 1 Review

Item Includes
Lens Hood, Front & Rear Lens Caps, Pouch Case, 1 Year International Warranty plus 3 Year Sigma U.S.A. Extended Warranty (Total Warranty is 4 Years from Date of Purchase)

Description
Sigma 20mm f1.8 EX DG Aspherical RF is one of several EX Series lenses. It is the first 20mm Super wide-angle lens in the world with a large aperture of F1.8 and angle of view 94.5°. It has Macro focusing capability with a minimum focusing distance of 20cm/7.9inches (reproduction ratio 1:4).

The iris diaphragm has 9 diaphragm blades to obtain beautiful out of focus image. It incorporates an aspherical lens element in the front as well as rear lens groups, to minimize distortion, spherical aberration and astigmatism.

The lens has non-vignetting optical construction, in order to obtain adequate peripheral brightness with open aperture. This is especially desirable for digital cameras. The lens incorporates a rear focus system eliminating front lens rotation, thus allowing the use of a Perfect Hood and easy use of polarizing filters.

The lens also incorporates dual-focus mechanism. It is easy to hold the lens, since the focusing ring does not rotate during auto-focus, yet it provides adequate focusing torque of the focusing ring during manual focusing of the lens. The lens materials used in this lens are lead and arsenic free ecological glass.

Specifications
Construction11 groups /13 elements
Angle of view94.5°
F stop range22
Closest Focusing Distance20cm / 7.9"
Maximum Magnification1:4
Filter Size82mm
Dimensions (Length x Diameter)88.5 x 87mm / 3.5 x 3.4"
Weight520g / 18.3oz.
  
 
Sigma 82mm EX DG, Digitally Optimised, UV (Ultra Violet) Wide Angle Multi-Coated Glass Filter $45.99
SG82UVEX
Buy
Sigma 82mm EX DG, Digitally Optimised, UV (Ultra Violet) Wide Angle Multi-Coated Glass Filter
B + W 82mm UV (Ultra Violet) Haze Wide Angle Slim Mount Coated Glass Filter $92.50
BW82UVW
Buy
B + W 82mm UV (Ultra Violet) Haze Wide Angle Slim Mount Coated Glass Filter
Mack 7 Year Warranty for Lenses Valued $300.00 to $600.00. $26.95
CZW7L24
Buy
Mack 7 Year Warranty for Lenses Valued $300.00 to $600.00.
Lowepro 11 x 14cm Lens Case, Black $29.95
LPLC1114
Buy
Lowepro 11 x 14cm Lens Case, Black
Adorama Cleaning Kit for Optics, Lenses, and Digital Point & Shoot Cameras $14.95
CPLPD
Buy
Adorama Cleaning Kit for Optics, Lenses, and Digital Point & Shoot Cameras
Flashpoint CapKeeper 2 (Model CK-2) Lens Cap Leash (1) $1.99
FPCL2
Buy
Flashpoint CapKeeper 2 (Model CK-2) Lens Cap Leash (1)
Adorama CapKeeper 2, Model CK-2, Lens Cap Leash, Pack of Three. $6.00
LNCL23
Buy
Adorama CapKeeper 2, Model CK-2, Lens Cap Leash, Pack of Three.