Compare Samyang 20mm F1.8 ED AS UMC vs Laowa 25mm f/2.8 2.5-5X Ultra Macro vs Laowa 9mm f/2.8 Zero-D
Construction
Aperture Blades
7 blades
8 blades
7 blades
Colors
Black
Black
Form Factor
Ultra Wide-Angle Prime Lens
Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Image Size
Full-Frame
Full-Frame
APS-C
Lens Barrel
Physical aperture ring, Distance scale
Physical aperture ring
Physical aperture ring, Distance scale, DoF 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 E-mount
Canon EF-M-mount, Fujifilm X-mount, Leica L-mount, Sony E-mount
Optical Formula | Elements
13 elements
8 elements
15 elements
Optical Formula | Groups
12 groups
6 groups
10 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups
1 low-dispersion element groups
3 ED, 2 aspherical elements + Frog Eye Coating groups
Dimensions
Filter Diameter
77 mm / 3.03 in
49 mm / 1.93 in
Size | Diameter
83 mm / 3.27 in
82 mm / 3.23 in
60 mm / 2.36 in
Size | Length
88 mm / 3.46 in
65 mm / 2.56 in
53 mm / 2.09 in
Weight
497 g / 17.56 oz
400 g / 14.13 oz
215 g / 7.60 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
81.8° Diagonal | 71.5° Horizontal | 51.3° Vertical
116.1° Diagonal | 106.3° Horizontal | 83.3° Vertical
Aperture
f/1.8 ~ f/22
f/2.8 ~ f/16
f/2.8 ~ f/22
Autofocus
No
No
No
Crop Factor
1.5
Focal Length
20 mm
25 mm
9 mm
Focal Length (35mm Equivalent)
13.5 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
No
No
Performance
Max Magnification
5x
0.13x
Min Focus Distance
200 mm / 7.87 in
170 mm / 6.69 in
120 mm / 4.72 in
Production
Accessory
Lens hood included
Lens hood sold separately
Lens hood included
Debut
2016-08-08
2018-03-07
2018-03-22
Made In
China
China
Reviews
Neofiliac score
59%
31%
50%
Pros
- Rather affordable
- Exceptional maximum magnification
- Optional LED ring light and tripod collar available
- Compact and light weight
- One of the widest rectilinear lens available for APS-C
- Good sharpness
Cons
- Lacks weather sealing
- Not the highest grade of build
- Not stabilized
- No lens hood available
- Lacks weather sealing
- Lacks weather sealing
- No EXIF
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