Compare Samyang 16mm F2 ED AS UMC CS vs Samyang 12mm F2.8 ED AS NCS Fisheye vs Nikon 20mm F1.8G
Construction
Aperture Blades
8 blades
7 blades, Circular blades
7 blades, Rounded blades
Colors
Black
Form Factor
Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Image Size
APS-C
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring, Distance scale
Physical aperture ring, Distance scale
Distance scale
Lens Mount
Canon EF-M-mount, Canon EF-mount, Micro Four Thirds-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
Nikon F-mount
Material
Metal barrel, metal mount
Composite
Motor
Ultrasonic
Optical Formula | Elements
13 elements
12 elements
13 elements
Optical Formula | Groups
11 groups
8 groups
11 groups
Optical Formula | Special Glass
1 ED glass element, 1 aspheric element, 1 hybrid aspheric element groups
2 aspherical, 3 ED, nano coating system groups
2 ED, 2 aspherical 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
83 mm / 3.27 in
Size | Length
89 mm / 3.50 in
73 mm / 2.87 in
81 mm / 3.19 in
Weight
583 g / 20.60 oz
515 g / 18.20 oz
355 g / 12.54 oz
Function
Angle Of View
84.1° Diagonal | 73.7° Horizontal | 53.1° Vertical
180° Diagonal (fisheye)
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
Aperture
f/2 ~ f/22
f/2.8 ~ f/22
f/1.8 ~ f/16
Autofocus
No
No
Crop Factor
1.5
Focal Length
16 mm
12 mm
20 mm
Focal Length (35mm Equivalent)
24.0 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
No
Performance
Max Magnification
0.23x
Min Focus Distance
200 mm / 7.87 in
200 mm / 7.87 in
200 mm / 7.87 in
Production
Accessory
Lens hood included
Lens hood included
Lens Hood: HB-72 (supplied), CL-1015 soft lens case
Debut
2013-06-13
2014-11-01
2014-09-12
Reviews
Neofiliac score
50%
40%
78%
Pros
- A bit large for an APS-C lens
- 180° FOV
- Reasonably good sunstar
- Good sharpness
- Well corrected
Cons
- Not the best grade of build
- Not the strongest IQ
- Lacks front filter thread
- Lacks weather sealing
- Not the sharpest
- Lacks weather sealing
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