Compare Samyang 21mm F1.4 ED AS UMC CS vs Samyang 20mm F1.8 ED AS UMC vs Voigtlander 35mm Ultron
Construction
Aperture Blades
9 blades, Circular blades
7 blades
10, Straight
Colors
Black
Black, Silver
Form Factor
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
Lens Mount
Canon EF-M-mount, Fujifilm X-mount, Micro Four Thirds-mount, Sony E-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
M-mount (VM)
Optical Formula | Elements
8 elements
13 elements
8 elements
Optical Formula | Groups
7 groups
12 groups
5 groups
Optical Formula | Special Glass
3 aspherical and 2 ED elements + Ultra Multi Coating groups
Two aspherical + 3 ED elements, Ultra Multi Coating groups
Dimensions
Filter Diameter
58 mm / 2.28 in
77 mm / 3.03 in
39 mm
Size | Diameter
64 mm / 2.52 in
83 mm / 3.27 in
52 mm
Size | Length
68 mm / 2.68 in
88 mm / 3.46 in
28.1 mm
Weight
275 g / 9.72 oz
497 g / 17.56 oz
210 g
Function
Angle Of View
69.0° Diagonal | 59.5° Horizontal | 41.7° Vertical
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
62.5°
Aperture
f/1.4 ~ f/22
f/1.8 ~ f/22
F/2 - f/16
Autofocus
No
No
Crop Factor
1.5
Focal Length
21 mm
20 mm
35 mm
Focal Length (35mm Equivalent)
31.5 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
Weather Resistance
No
No
Performance
Min Focus Distance
280 mm / 11.02 in
200 mm / 7.87 in
0.58m (Rangefinder coupling ∞ ~ 0.7 m)
Production
Accessory
Lens hood included
Lens hood included
Lens Hood: LH-4N or LH-12, optional
Debut
2015-09-21
2016-08-08
2021-Q1
Made In
Japan
Reviews
Neofiliac score
50%
59%
Pros
- Bright maximum aperture
- Very sharp
- Good color rendition
- Rather affordable
Cons
- Lacks weather sealing
- Lacks weather sealing
- Not the highest grade of build
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