Compare Samyang 20mm F1.8 ED AS UMC vs Laowa 10-18mm f/4.5-5.6 vs Laowa 12mm f/2.8 Zero-D
Construction
Aperture Blades
7 blades
7 blades
7 blades
Form Factor
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Image Size
Full-Frame
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring, Distance scale
Physical aperture ring, Distance scale, DoF scale
Physical aperture ring
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
Leica L-mount, Nikon Z-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
Optical Formula | Elements
13 elements
14 elements
16 elements
Optical Formula | Groups
12 groups
10 groups
10 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups
1 ED and 2 aspherical elements groups
Dimensions
Filter Diameter
77 mm / 3.03 in
37 mm / 1.46 in
Size | Diameter
83 mm / 3.27 in
70 mm / 2.76 in
75 mm / 2.95 in
Size | Length
88 mm / 3.46 in
91 mm / 3.58 in
83 mm / 3.27 in
Weight
497 g / 17.56 oz
496 g / 17.53 oz
609 g / 21.52 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
130.4° Diagonal | 121.9° Horizontal | 100.4° Vertical (wide) ~ 100.5° Diagonal | 90.0° Horizontal | 67.4° Vertical (tele)
122.0° Diagonal | 112.6° Horizontal | 90.0° Vertical
Aperture
f/1.8 ~ f/22
f/4.5–5.6 ~ f/22
f/2.8 ~ f/22
Autofocus
No
No
No
Focal Length
20 mm
10 mm ~ 18 mm
12 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
No
Performance
Max Magnification
0.25x
0.2x
Min Focus Distance
200 mm / 7.87 in
150 mm / 5.91 in
180 mm / 7.09 in
Production
Accessory
Lens hood included
Lens hood included
Debut
2016-08-08
2018-04-20
2016-07-26
Made In
China
China
Reviews
Neofiliac score
59%
40%
50%
Pros
- Rather affordable
- Widest rectilinear zoom lens for FF
- Good build quality
- One of the widest rectilinear FF lens
- Solid build quality
- Low distortion
- Reasonably sharp
Cons
- Lacks weather sealing
- Not the highest grade of build
- Dark maximum aperture
- Lacks weather sealing
- No front filter
- Optically weak
- Lacks front filter thread
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