Compare Samyang 21mm F1.4 ED AS UMC CS vs Samyang 35mm F1.4 AS UMC vs Samyang 20mm F1.8 ED AS UMC
Construction
Aperture Blades
9 blades, Circular blades
7 blades
Colors
Black
Form Factor
Wide-Angle Prime Lens
Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Image Size
APS-C
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring, Distance scale, DoF scale
Physical aperture ring, Distance scale, DoF scale
Physical aperture ring, Distance scale
Lens Mount
Canon EF-M-mount, Fujifilm X-mount, Micro Four Thirds-mount, Sony E-mount
Canon EF-mount, Nikon F-mount, Micro Four Thirds-mount, Pentax K-mount, Sony A-mount, Sony E-mount, Samsung NX-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
Optical Formula | Elements
8 elements
12 elements
13 elements
Optical Formula | Groups
7 groups
10 groups
12 groups
Optical Formula | Special Glass
3 aspherical and 2 ED elements + Ultra Multi Coating groups
2 high-refraction glass elements1 aspherical element groups
Two aspherical + 3 ED elements, Ultra Multi Coating groups
Dimensions
Filter Diameter
58 mm / 2.28 in
77 mm / 3.03 in
77 mm / 3.03 in
Size | Diameter
64 mm / 2.52 in
63 mm / 2.48 in
83 mm / 3.27 in
Size | Length
68 mm / 2.68 in
112 mm / 4.41 in
88 mm / 3.46 in
Weight
275 g / 9.72 oz
660 g / 23.32 oz
497 g / 17.56 oz
Function
Angle Of View
69.0° Diagonal | 59.5° Horizontal | 41.7° Vertical
63.5° Diagonal | 54.4° Horizontal | 37.8° Vertical
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
Aperture
f/1.4 ~ f/22
f/1.4 ~ f/22
f/1.8 ~ f/22
Autofocus
No
No
No
Crop Factor
1.5
Focal Length
21 mm
35 mm
20 mm
Focal Length (35mm Equivalent)
31.5 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
No
Performance
Min Focus Distance
280 mm / 11.02 in
300 mm / 11.81 in
200 mm / 7.87 in
Production
Accessory
Lens hood included
Lens hood included
Debut
2015-09-21
2010-09-16
2016-08-08
Reviews
Neofiliac score
50%
68%
59%
Pros
- Bright maximum aperture
- Very sharp
- Good color rendition
- Bright maximum aperture
- Good level of resolution
- Rather affordable
Cons
- Lacks weather sealing
- Quite large and heavy
- Lacks weather sealing
- Not the highest grade of build
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