Sigma 20mm f1.8 EX DG ASP RF


Description

This Sigma 20mm F1.8 EX DG Aspherical RF is a unique Sigma offering with an aperture of F1.8 making it the fastest super wide angle lens available from any camera or lens manufacturer. For the scenic or landscape photographer it’s important to have a wide angle lens with excellent optical performance and Sigma’s aspherical lens technology provides high quality images for the serious shooter. Sigma’s 20mm lens has a field of view of 94.5º and yet provides for a close focusing lens-to-subject distance of only 2.6 inches. Such performance parameters provide great creative freedom to the photographer who wishes to exploit its capabilities for juxtaposing very near subject with the surrounding background. This extreme wide angle view also makes this lens ideal for crating “stitched” panoramic scenes for dramatic effect. The architectural photographer will find this lens attractive for shooting building interiors and the photojournalists will find its fast speed a life saver in low light conditions.

Lens Construction 13 Elements in 11 Groups
Angle of View 94.5º
Number of Diaphragm Blades 9
Mininum Aperture f22
Minimum Focusing Distance 20 cm / 7.9 in
Filter Size (mm) 82
Maximum Magnifications 1:4
Dimensions
(Diameter x Length)
88.5 x 87 mm/3.5 x 3.4 in
Weight 520g / 18.3oz.
Corresponding Mounts
Sigma  ASP
RF 
EX 
DG 
Nikon  ASP
RF 
EX 
DG 
Canon  ASP
RF 
EX 
DG 
Sony/Minolta  ASP
RF 
EX 
DG 
Pentax  ASP
RF 
EX 
DG 
ASP - Aspherical
RF - Rear Focus
EX - EX Lens
DG - DG for Digital
D - Distance Information Function

* Nikon Mount: NO built in motor lens: NOT compatible with D40, D40x, D60, D3000, D5000

* The appearance, specifications, and the like of the product are subject to change for improvement without notice.

Chart Guide

MTF CHART

LENS CONSTRUCTION


Details

Date Added 2016-01-30
Product Id 10311468