Sigma 20mm f/1.8 EX DG Lens Specifications and Measurements

SpecificationsSigma 20mm f/1.8 EX DG Lens
  Sigma 20mm f/1.8 EX DG Lens
Year Introduced
Year Discontinued2015
Mounts OnFull-Frame, APS-C
Lenses / Groups13/11
Angle of View: Diagonal94.5°
Aperture Range - Wide / Long f/1.8-22
Number of Aperture Blades 9
Rounded Aperture?
Manufacturer Specification Weight 18.4 oz  (520g)
Actual Weight
In-Use Weight
Manufacturer Spec Size (DxL) 3.5 x 3.43”  (89 x 87mm)
Measured Size (DxL)
Max Length at Full Extension
Internal Focusing? / Extends with Focusing? /
Lens Length with Hood (Min-Max)
Size of Rings: Focus / Zoom
Filter Size 82mm  UV ► CP ►
Front Element (Filter Mount) Rotates N
AF Motor Type
Full Time Manual Focus
Focus Limiter? / Focus Limiter Ranges N
Distance Scale? / Type Y / Window
Close Focus  
Specified Min Focus Distance 7.91”  (201mm)
Tested Min Focus Distance (Wide / Long)
Maximum Magnification (MM) 0.25x
Magnification Range with 12mm Ext Tube
Magnification Range with 25mm Ext Tube
Tripod Ring Included? / Removable? N
Zoom Ring Lock Switch? N
Lens Hood Included / Model? Y / LH875-02 548 Buy ►
Weather Sealed? / Filter Required? N
Image Stabilization? / Stops? / Tripod Sensing? N
Extender Compatible? N
Case Included? / Type? Y /
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