Compare Samyang 20mm F1.8 ED AS UMC vs Laowa 12mm f/2.8 Zero-D vs Canon TS-E 50mm F2.8
Construction
Aperture Blades
7 blades
7 blades
9 blades
Colors
Black
Form Factor
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Normal Prime Lens
Image Size
Full-Frame
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring, Distance scale
Physical aperture ring
Distance 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-mount, Canon RF-mount, Leica L-mount, Nikon F-mount, Nikon Z-mount, Pentax K-mount, Sony A-mount, Sony E-mount
Canon EF-mount
Material
Magnesium alloy
Optical Formula | Elements
13 elements
16 elements
12 elements
Optical Formula | Groups
12 groups
10 groups
9 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups
Molded glass aspherical and UD elements + SWC and ASC coatings groups
Dimensions
Filter Diameter
77 mm / 3.03 in
77 mm / 3.03 in
Size | Diameter
83 mm / 3.27 in
75 mm / 2.95 in
87 mm / 3.43 in
Size | Length
88 mm / 3.46 in
83 mm / 3.27 in
115 mm / 4.53 in
Weight
497 g / 17.56 oz
609 g / 21.52 oz
945 g / 33.39 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
122.0° Diagonal | 112.6° Horizontal | 90.0° Vertical
46.8° Diagonal | 39.6° Horizontal | 27.0° Vertical
Aperture
f/1.8 ~ f/22
f/2.8 ~ f/22
f/2.8 ~ f/32
Autofocus
No
No
No
Focal Length
20 mm
12 mm
50 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
Performance
Max Magnification
0.2x
0.5x
Min Focus Distance
200 mm / 7.87 in
180 mm / 7.09 in
270 mm / 10.63 in
Production
Accessory
Lens hood included
Lens hood included
Lens hood included
Debut
2016-08-08
2016-07-26
2017-08-29
Made In
China
Reviews
Neofiliac score
59%
50%
52%
Pros
- Rather affordable
- One of the widest rectilinear FF lens
- Solid build quality
- Low distortion
- Reasonably sharp
- Tilt-shift capability
- 0.5x reproduction ratio
- Superb build quality
Cons
- Lacks weather sealing
- Not the highest grade of build
- Lacks front filter thread
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