Site Title

Compare Samyang 20mm F1.8 ED AS UMC vs Samyang 21mm F1.4 ED AS UMC CS

Reviews

Neo score
59%
50%
Pros
  • Rather affordable
  • Bright maximum aperture
  • Very sharp
  • Good color rendition
Cons
  • Lacks weather sealing
  • Not the highest grade of build
  • Lacks weather sealing

Price

Offers (incl. referral links)

Construction

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

Dimensions

Filter Diameter
77 mm / 3.03 in
58 mm / 2.28 in
Size | Diameter
83 mm / 3.27 in
64 mm / 2.52 in
Size | Length
88 mm / 3.46 in
68 mm / 2.68 in
Weight
497 g / 17.56 oz
275 g / 9.72 oz

Function

Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
69.0° Diagonal | 59.5° Horizontal | 41.7° Vertical
Aperture
f/1.8 ~ f/22
f/1.4 ~ f/22
Autofocus
No
No
Crop Factor
1.5
Focal Length
20 mm
21 mm
Focal Length (35mm Equivalent)
31.5 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
Weather Resistance
No
No

Performance

Min Focus Distance
200 mm / 7.87 in
280 mm / 11.02 in

Production

Accessory
Lens hood included
Lens hood included
Debut
2016-08-08
2015-09-21
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