Compare Samyang 20mm F1.8 ED AS UMC vs Samyang 12mm F2.8 ED AS NCS Fisheye vs Laowa 15mm f/4 1:1 Macro
Construction
Aperture Blades
7 blades
7 blades, Circular blades
14 blades
Colors
Black
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, Distance 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
Canon EF-mount, Nikon F-mount, Pentax K-mount, Sony A-mount, Sony E-mount
Canon EF-mount, Leica L-mount, Nikon F-mount, Pentax K-mount, Sony A-mount, Sony E-mount
Optical Formula | Elements
13 elements
12 elements
12 elements
Optical Formula | Groups
12 groups
8 groups
9 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups
2 aspherical, 3 ED, nano coating system groups
Three high refractive and one ED element groups
Dimensions
Filter Diameter
77 mm / 3.03 in
77 mm / 3.03 in
Size | Diameter
83 mm / 3.27 in
77 mm / 3.03 in
84 mm / 3.31 in
Size | Length
88 mm / 3.46 in
73 mm / 2.87 in
65 mm / 2.56 in
Weight
497 g / 17.56 oz
515 g / 18.20 oz
410 g / 14.49 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
180° Diagonal (fisheye)
110.6° Diagonal | 100.4° Horizontal | 77.3° Vertical
Aperture
f/1.8 ~ f/22
f/2.8 ~ f/22
f/4 ~ f/32
Autofocus
No
No
No
Focal Length
20 mm
12 mm
15 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
No
No
Performance
Max Magnification
1x
Min Focus Distance
200 mm / 7.87 in
200 mm / 7.87 in
470 mm / 18.50 in
Production
Accessory
Lens hood included
Lens hood included
Lens hood included
Debut
2016-08-08
2014-11-01
2015-06-23
Made In
China
Reviews
Neofiliac score
59%
40%
50%
Pros
- Rather affordable
- 180° FOV
- Reasonably good sunstar
- 1:1 reproduction
- One of the widest macro lens for FF
- Unique +/- 6mm shift feature
Cons
- Lacks weather sealing
- Not the highest grade of build
- Lacks front filter thread
- Lacks weather sealing
- Not the sharpest
- Dark maximum aperture
- Lacks weather sealing
- No EXIF communication
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