Samyang 20mm F1.8 ED AS UMC Lens Review and Specs

Samyang 20mm F1.8 ED AS UMC Canon EF-M Review

Main Features

20mm Focal Range

F1.8 Max Aperture

Filter Thread: 77mm

Max Format: 35mm FF

Canon EF-M Mount

Weight: 497g.

Diameter: 83mm

Length: 88mm

Min Focus Distance:0.2m

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Samyang 20mm F1.8 Overview

Samyang 20mm F1.8 is a Manual Focus (MF) Wideangle Prime lens with 35mm FF max sensor coverage. When mounted on a 35mm FF sensor camera, it will give you an FF equivalent focal range of 20mm. Providing a max aperture of f1.8 at 20mm, this lens is very fast.
Samyang 20mm F1.8 is not a weather sealed lens, so you have to be extra careful against rain and dust.

Pros and Cons of Samyang 20mm F1.8 ED AS UMC

PROs

Hood supplied

Full-time Manual Focusing

Fast Aperture

Covers Full-Frame Sensor

CONs

No Weather Sealing

No Autofocus

Samyang 20mm F1.8 Detailed Specifications

General
Brand	Samyang
Lens Type	Prime
Lens Type	Wideangle Prime
Lens Mount	Canon EF-M
Max_Format	35mm FF
Focal Range	20mm
Image Stabilization
Colour	Unknown
Zoom Method	No Zoom
Power Zoom	No Zoom
Zoom Lock	No Zoom
Zoom Ratio	1.0X
APERTURE
Max Aperture	F1.8
Min Aperture	F22
Aperture Ring	Yes
Diaphragm Blades	7
Optics
Optical Elements	13
Optical Groups	12
Special Elements	Two aspherical + 3 ED elements, Ultra Multi Coating

FOCUSING
Min Focus Distance	0.2m
Max Magnification	unknown
Autofocus	No
AF Motor Type	No AF
Full Time Manual	Yes
Focus Method	Internal
Distance Scale	Yes
PHYSICAL SPECS
Weight	497g
Diameter	83mm
Length	88mm
Weather Sealing	No
Filter Thread	77mm
Filter Notes	-
Hood Supplied	Yes
Tripod Collar	No

Samyang 20mm F1.8 ED AS UMC Alternatives in Canon EF-M Mount

Model		Focal Length	Max Aperture	Weight	Focusing
	Canon EF-M 22mm f2 STM	22mm	F2.0	105gr	AF
Compare with Samyang 20mm F1.8 ED AS UMC
	Samyang 16mm f2.0 ED AS UMC CS	16mm	F2.0	583gr	MF
Compare with Samyang 20mm F1.8 ED AS UMC