Samyang 20mm F1.8 ED AS UMC vs Sigma 20mm F1.4 DG HSM A Detailed Comparison

Samyang 20mm F1.8 ED AS UMC vs Sigma 20mm F1.4 DG HSM A

Lens to replace

Change

Wideangle Prime | Canon EF

Change

Wideangle Prime | Canon EF

Reasons to choose Samyang 20mm F1.8 ED AS UMC over Sigma 20mm F1.4 DG HSM A

Reasons to choose Sigma 20mm F1.4 DG HSM A over Samyang 20mm F1.8 ED AS UMC

Max Aperture - Wide	1.4 vs 1.8	faster lens at wide
Diaphragm Blades	9 vs 7	better Bokeh
Autofocus	Yes vs None	Easier and more accurate focusing

Samyang 20mm F1.8 vs Sigma 20mm F1.4 DG HSM A Specs Table

Detailed comparison of specifications

General	Samyang 20mm F1.8	Sigma 20mm F1.4 DG HSM A
Brand	Samyang	Sigma
Lens Type	Prime	Prime
Price	$475.00	$898.10
Lens Type	Wideangle Prime	Wideangle Prime
Lens Mount	Canon EF	Canon EF
Max Format	35mm FF	35mm FF
Focal Range	20mm	20mm
Image Stabilization		No
Colour	Unknown
Zoom Method	No Zoom	No Zoom
Power Zoom	No	No
Zoom Lock	No	No
Zoom Ratio	1.0X	1.0X
Aperture
Max Aperture	F1.8	F1.4
Min Aperture	F22
Aperture Ring	Yes	No
Diaphragm Blades	7	9
Optics
Optical Elements	13	15
Optical Groups	12	11
Special Elements	Two aspherical + 3 ED elements, Ultra Multi Coating	Two FLD, five SLD elements + Super Multi-Layer coating
Focusing
Min Focus Distance	0.2m	0.3m
Max Magnification	unknown	0.14X
Autofocus	No	Yes
AF Motor Type	No AF	Ring-type ultrasonic
Full Time Manual	Yes	Yes
Focus Method	Internal	Internal
Distance Scale	Yes	Yes
DoF Scale	Unknown	No
Distance Scale	Yes	Yes
Focus Distance Limiter	Unknown	Unknown
Physical Specs
Weight	497g	950g
Diameter	83mm	91mm
Length	88mm	130mm
Materials	Unknown	Unknown
Weather Sealing	No	No
Filter Thread	77mm	Unknown
Filter Notes	-	-
Hood Supplied	Yes	Yes
Hood Code	Unknown	Unknown
Tripod Collar	No	No
Optional Accessories	-	-
	Report	Report