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

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

Lens to replace

Change

Wideangle Prime | Nikon F (FX)

Change

Samyang 20mm F1.8

Wideangle Prime | Nikon F (FX)

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

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

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

Detailed comparison of specifications

General	Sigma 20mm F1.4 DG HSM A	Samyang 20mm F1.8
Brand	Sigma	Samyang
Lens Type	Prime	Prime
Price	$713.55	$439.00
Lens Type	Wideangle Prime	Wideangle Prime
Lens Mount	Nikon F (FX)	Nikon F (FX)
Max Format	35mm FF	35mm FF
Focal Range	20mm	20mm
Image Stabilization	No
Colour	Black	Unknown
Zoom Method	No Zoom	No Zoom
Power Zoom	No	No
Zoom Lock	No	No
Zoom Ratio	1.0X	1.0X
Aperture
Max Aperture	F1.4	F1.8
Min Aperture		F22
Aperture Ring	No	Yes
Diaphragm Blades	9	7
Optics
Optical Elements	15	13
Optical Groups	11	12
Special Elements	Two FLD, five SLD elements + Super Multi-Layer coating	Two aspherical + 3 ED elements, Ultra Multi Coating
Focusing
Min Focus Distance	0.3m	0.2m
Max Magnification	0.14X	unknown
Autofocus	Yes	No
AF Motor Type	Ring-type ultrasonic	No AF
Full Time Manual	Yes	Yes
Focus Method	Internal	Internal
Distance Scale	Yes	Yes
DoF Scale	No	Unknown
Distance Scale	Yes	Yes
Focus Distance Limiter	Unknown	Unknown
Physical Specs
Weight	950g	497g
Diameter	91mm	83mm
Length	130mm	88mm
Materials	Unknown	Unknown
Weather Sealing	No	No
Filter Thread	Unknown	77mm
Filter Notes	-	-
Hood Supplied	Yes	Yes
Hood Code	Unknown	Unknown
Tripod Collar	No	No
Optional Accessories	-	-
	Report	Report

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