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Photo 0of Samyang 21mm F1.4 ED AS UMC CS APS-C Lens (2015)Photo 1of Samyang 21mm F1.4 ED AS UMC CS APS-C Lens (2015)Photo 2of Samyang 21mm F1.4 ED AS UMC CS APS-C Lens (2015)

Product Overview

Samyang 21mm F1.4 ED AS UMC CS is a large-aperture manual-focus wide-angle prime lens for Canon EF-M-mount, Fujifilm X-mount, Micro Four Thirds-mount, and Sony E-mount. It covers the APS-C image circle. Introduced by Samyang in 2015, it has 8 elements in 7 groups.
Manual focus may be limiting to some, but purists will find it much more engaging. There are also fewer things to go wrong on the long run. Unfortunately, Samyang has opted to omit weather sealing for this lens, so owners should pay extra attention when shooting in incremental weathers.
The bright maximum aperture for a wide-angle lens is appreciated for night and astro photography, though some may prefer the perspective of an ultra wide-angle lens for this. Even though the lens is not stabilized, at this focal range it does not usually matter. In fact, some may be able to get cleaner corners without image stabilization.

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Ratings

What we found**

Neo score 50% (not directly comparable across industries)
Pros
  • Bright maximum aperture
  • Very sharp
  • Good color rendition
Cons
  • Lacks weather sealing

Price Comparison (incl. referral links)*

Specifications

Construction

Aperture Blades
9 blades, Circular blades
Colors
Black
Form Factor
Wide-Angle Prime Lens
Image Size
APS-C
Lens Barrel
Physical aperture ring, Distance scale, DoF scale
Lens Mount
Canon EF-M-mount, Fujifilm X-mount, Micro Four Thirds-mount, Sony E-mount
Optical Formula | Elements
8 elements
Optical Formula | Groups
7 groups
Optical Formula | Special Glass
3 aspherical and 2 ED elements + Ultra Multi Coating groups

Dimensions

Filter Diameter
58 mm / 2.28 in
Size | Diameter
64 mm / 2.52 in
Size | Length
68 mm / 2.68 in
Weight
275 g / 9.72 oz

Function

Angle Of View
69.0° Diagonal | 59.5° Horizontal | 41.7° Vertical
Aperture
f/1.4 ~ f/22
Autofocus
No
Crop Factor
1.5
Focal Length
21 mm
Focal Length (35mm Equivalent)
31.5 mm
Focus Type
Internal
Image Stabilization
No
Weather Resistance
No

Performance

Min Focus Distance
280 mm / 11.02 in

Production

Accessory
Lens hood included
Debut
2015-09-21

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User Reviews

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**Neo score is the calculated by our AI using advanced models based on the features and qualities of each product. Scores are not directly comparable across industries.

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