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

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Specifications	Sigma 20mm f/1.8 EX DG Lens
Focal Length Range	20mm
APS-C Sensor DSLRs Only?	N
Lenses / Groups
Angle of View: Diagonal
Angle of View: Horizontal
Angle of View: Vertical

Aperture
Aperture Range - Wide / Long	f/1.8-22
Number of Aperture Blades
Rounded Aperture?

Weight
Manufacturer Specification Weight	18.4 oz
Actual Weight
Lens Hood Weight
In-Use Weight

Size
Manufacturer Spec Size (DxL)	3.5 x 3.43”
Measured Size (DxL)
Max Length at Full Extension
Internal Zoom? / Extends with Zoom?
Internal Focusing? / Extends with Focusing?	/
Lens Hood Size (DxL)
Lens Length with Hood (Min / Max)
Size of Rings - Zoom / Focus	/
Filter Size
Front Element (Filter Mount) Rotates

Focus
AF Motor Type
Full Time Manual Focus
Focus Limiter? / Focus Limiter Ranges
Distance Info Provided to Camera?
Distance Scale? / Type	Y / Window

Close Focus
Specified Min Focus Distance	7.9”
Tested Min Focus Distance (Wide / Long)
Maximum Magnification (MM)
MM with 12mm Extension Tube
MM with 25mm Extension Tube
MM with 250D Closeup Lens
MM with 500D Closeup Lens

Features
Tripod Ring Included? / Removable?	N
Zoom Ring Lock Switch?	N
Lens Hood Included / Model?	Y /
Weather Sealed? / Filter Required?	N
Image Stabilization? / Stops? / Tripod Sensing?	N
Metal Mount?	Y
Extender Compatible?	N
Case Included? / Type?	/
47.25" x 31.5" Subject Framing Distance

History
Year Introduced