Sigma 20mm f/1.8 EX DG Asperical RF Specifications

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Rating: 4.5 out of 5

Lowest Price: £591.30

Manufacturer's Description:

"Wide angle lens with large aperture and superior peripheral brightness

This super-wide-angle lens is ensured minimal light-fall-off with superior peripheral brightness. The iris diaphragm has 9 diaphragm blades to obtain beautiful out of focus images in the foreground and background. This is an ideal DG lens optimized Digital SLR camera."

Availability
	Discontinued	No
	Year announced	No Data
General
	Lens Mounts	Canon EF Minolta AF Nikon AF D Pentax K SMC-FA Sigma SA
	Focal Type	Wide
Lens
	Focal Length	20mm
	Angle of View	95°
	Max Aperture	f/1.8
	Min Aperture	f/22
	Filter Size	82mm
	Stabilised	No
	35mm equivalent	No Data
	Internal focusing	No Data
	Maximum magnification	No Data
Focusing
	Min Focus	20cm
	Macro	No
	Focusing modes
Construction
	Blades	9
	Elements	13
	Groups	11
	Weather-sealed	No Data
Box Contents
	Box Contents	No Data
Dimensions
	Weight	520g
	Height	89.5mm
	Diameter	88.6mm
MTF Data
	Effective focal length	No Data
	Weighted MTF	No Data
	Average Weighted MTF	No Data
	Weighted MTF 10 lp/mm	No Data
	Weighted MTF 20 lp/mm	No Data
	Weighted MTF 40 lp/mm	No Data
	Distortion	No Data
	Grade	No Data
	Photodo MTF Score	No Data