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Sigma Super Wide Angle 20mm f/1.8 EX Aspherical DG DF RF Autofocus Lens for Nikon AF-D USA

B&H # SI2018NAF Mfr # 411306
In Stock
Free Expedited Shipping
You Pay: $549.00

This 20mm is a Super wide-angle lens with a large aperture of f/1.8 and angle of view 94.5°. It has Macro focusing capability with a minimum focusing distance of just 7.9", for a reproduction ratio of 1:4. The 9-bladed iris diaphragm obtains beautiful out of focus image characteristics. Aspherical lens elements in the front & rear lens groups minimize distortion, spherical aberration and astigmatisms. The lens has non-vignetting optical construction in order to obtain adequate peripheral brightness with wide apertures-especially desirable for digital cameras. The lens incorporates a rear focus system eliminating front lens rotation. The focusing ring does not rotate during autofocus yet provides adequate focusing torque of the focusing ring during manual focusing of the lens. The lens materials used in this new lens are lead and arsenic free ecological glass.

Note! AF not supported by D40 and D60 cameras.

Performance
Focal Length 20mm
Aperture Maximum: f/1.8
Minimum: f/22
Camera Mount Type Nikon F
Format Compatibility Nikon FX/35mm Film
Nikon DX
Angle of View 94.5°
Minimum Focus Distance 7.9" (20.07 cm)
Magnification 0.25x
Maximum Reproduction Ratio 1:4
Elements/Groups 13/11
Diaphragm Blades 9
Features
Image Stabilization No
Autofocus Yes
Tripod Collar No
Environmental
Physical
Filter Thread 82 mm
Dimensions (DxL) Approx. 3.5 x 3.4" (8.89 x 8.64 cm)
Weight 1.14 lb (520 g)
Sigma Super Wide Angle 20mm f/1.8 EX Aspherical DG DF RF Autofocus Lens for Nikon AF-D
  • Front & Rear Caps
  • Lens Hood
  • Case
  • Limited 1-Year North and South America Warranty Against Manufacturing and Workmanship Defects.
  • Limited 3-Year U.S.A. Extended Warranty Extension Against Manufacturing and Workmanship Defects.
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