Compare Samyang 20mm F1.8 ED AS UMC vs Laowa 12mm f/2.8 Zero-D vs Sony 20mm F1.8 G
Construction
Aperture Blades
7 blades
7 blades
Colors
Black
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
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
Canon EF-mount, Canon RF-mount, Leica L-mount, Nikon F-mount, Nikon Z-mount, Pentax K-mount, Sony A-mount, Sony E-mount
Sony E-mount
Motor
Linear Motor
Optical Formula | Elements
13 elements
16 elements
14 elements
Optical Formula | Groups
12 groups
10 groups
12 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups
2 aspherical + 3 ED elements, Nano AR coating groups
Dimensions
Filter Diameter
77 mm / 3.03 in
67 mm / 2.64 in
Size | Diameter
83 mm / 3.27 in
75 mm / 2.95 in
74 mm / 2.91 in
Size | Length
88 mm / 3.46 in
83 mm / 3.27 in
85 mm / 3.35 in
Weight
497 g / 17.56 oz
609 g / 21.52 oz
373 g / 13.18 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
122.0° Diagonal | 112.6° Horizontal | 90.0° Vertical
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
Aperture
f/1.8 ~ f/22
f/2.8 ~ f/22
f/1.8 ~ f/16
Autofocus
No
No
Yes
Focal Length
20 mm
12 mm
20 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
Yes
Performance
Max Magnification
0.2x
0.22x
Min Focus Distance
200 mm / 7.87 in
180 mm / 7.09 in
190 mm / 7.48 in
Production
Accessory
Lens hood included
Lens hood included
Lens hood included
Debut
2016-08-08
2016-07-26
2020-02-25
Made In
China
Model Name
SEL20F18G
Reviews
Neofiliac score
59%
50%
88%
Pros
- Rather affordable
- One of the widest rectilinear FF lens
- Solid build quality
- Low distortion
- Reasonably sharp
- Weather-sealed
- Declickable aperture ring
- Very sharp corner to corner
- Low distortion
Cons
- Lacks weather sealing
- Not the highest grade of build
- Lacks front filter thread
- Not the most solidly-built
- f/1.8 limiting for night photography
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