Samyang 20mm F1.8 ED AS UMC vs Sigma 24mm F1.4 DG HSM A Detailed Comparison

Samyang 20mm F1.8 ED AS UMC vs Sigma 24mm F1.4 DG HSM A

Lens to replace

Change

Samyang 20mm F1.8

Wideangle Prime | Canon EF

CHECK PRICE

BUY from B&H PHOTO

Change

Sigma 24mm F1.4 DG HSM A

Wideangle Prime | Canon EF

CHECK PRICE

BUY from B&H PHOTO

Samyang 20mm F1.8 vs Sigma 24mm F1.4 DG HSM A Comparison Overview

In this review, we will be comparing Samyang 20mm F1.8 and Sigma 24mm F1.4 DG HSM A, two Wideangle Prime lenses from Samyang and Sigma.

We will start with briefly looking and the main specs of these two lenses and in the section, we will start analyzing in more detail and list the pros and cons of each lenses.

Samyang 20mm F1.8 Key Specs

20mm Focal Range

F1.8 Max Aperture

Filter Thread: 77mm

Max Format: 35mm FF

Canon EF Mount

Weight: 497g.

Diameter: 83mm

Length: 88mm

Min Focus Distance:0.2m

Sigma 24mm F1.4 DG HSM A Key Specs

24mm Focal Range

F1.4 Max Aperture

Filter Thread: 77mm

Max Format:

Canon EF Mount

Weight: 665g.

Diameter: 85mm

Length: 90mm

Min Focus Distance:0.25m

Reasons to choose Samyang 20mm F1.8 ED AS UMC over Sigma 24mm F1.4 DG HSM A

Focal Length - Wide	20mm vs 24mm	4mm Wider coverage
Aperture Ring	Yes vs No	able to adjust the aperture on the lens
Weight	497g vs 665g	168g lighter
Diameter	83mm vs 85mm	2mm smaller in diameter
Length	88mm vs 90mm	2mm shorter
Minimum Focus Distance	0.2m vs 0.25m	can focus closer to the subject

Reasons to choose Sigma 24mm F1.4 DG HSM A over Samyang 20mm F1.8 ED AS UMC

Focal Length - Tele	24mm vs 20mm	4mm more Tele coverage
Max Aperture - Wide	1.4 vs 1.8	Wider aperture at wide end
Max Aperture - Tele	1.4 vs 1.8	Wider aperture at tele end
Diaphgragm Blades	9 vs 7	Potentially more rounded and smooth bokeh
Autofocus	Yes vs No	Easier, faster and more accurate focusing

Common Strengths of Samyang 20mm F1.8 ED AS UMC and Sigma 24mm F1.4 DG HSM A

Internal Focusing	Yes vs Yes	Length of the lens doesn't change during focusing
Distance Scale	Yes vs Yes	Distance Scale to assist focusing

Common Weaknesses of Samyang 20mm F1.8 ED AS UMC and Sigma 24mm F1.4 DG HSM A

Image Stabilization	No vs No	Reliant on in-body Image Stabilization
Weather Sealing	No vs No	not safe under rain and dust

**This post contains affiliate links and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.

Samyang 20mm F1.8 vs Sigma 24mm F1.4 DG HSM A Specs Table

Detailed comparison of specifications

General	Samyang 20mm F1.8	Sigma 24mm F1.4 DG HSM A
Brand	Samyang	Sigma
Lens Type	Prime	Prime
Price	CHECK PRICE	CHECK PRICE
Lens Type	Wideangle Prime	Wideangle Prime
Lens Mount	Canon EF	Canon EF
Max Format	35mm FF	35mm FF
Focal Range	20mm	24mm
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	F16.0
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	FLD and SLD elements
Focusing
Min Focus Distance	0.2m	0.25m
Max Magnification	unknown	unknown
Autofocus	No	Yes
AF Motor Type	No AF	Ultrasonic
Full Time Manual	Yes	Unknown
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	665g
Diameter	83mm	85mm
Length	88mm	90mm
Materials	Unknown	Unknown
Weather Sealing	No	Unknown
Filter Thread	77mm	77mm
Filter Notes	-	-
Hood Supplied	Yes	Unknown
Hood Code	Unknown	Unknown
Tripod Collar	No	No
Optional Accessories	-	-
	Report	Report