Sigma 20mm f/1.8 EX DG Aspherical RF
$164
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Specifications
Basic Information
Mounts
EF - CanonF - NikonA - SonyK - PentaxSA - Sigma
Announced Date
2008
Release Date
2008
MPB Max Price
$164 USD
Weight
~520 g
Dimensions
Length~90mm
Diameter88.6mm
Optics
Lens Type
Prime
Focal Length
20mm
Image Circle Size
Full-frame
Magnification
0.25x
Minimum Focus Distance
0.66ft / 0.20m
Number of Elements
13
Number of Element Groups
11
Has Diffractive Optics
No
Aperture
Maximum Aperture
f/1.8
Minimum Aperture
f/22
Number of Diaphragm Blades
9
Has Rounded Diaphragm Blades
No
Focus
Has Autofocus
Yes
Focus Motor Type
Micromotor
Has AF/MF Switch
Yes
Has Focus Ring
Yes
Has Internal Focus
No
Front Element Rotates
No
Stabilization
Has Image Stabilization
No
Build & Controls
Mount Material
Metal
Has Weather Sealing
No
Filters
Accepts Filter Types
Front Screw-on
Front Filter Thread Size
82mm
Accessories
Has Lens Hood
Yes
16 items missing.Contribute missing data.
Popularity
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Item CreatedJanuary 28, 2026
Last Updated
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