Compare Samyang 20mm F1.8 ED AS UMC vs KamLan 50mm F1.1 vs KamLan 8mm F3.0 Fisheye
Construction
Aperture Blades
7 blades
11 blades
Form Factor
Ultra Wide-Angle Prime Lens
Short Telephoto Prime Lens
Ultra Wide-Angle Prime Lens
Image Size
Full-Frame
APS-C
APS-C
Lens Barrel
Physical aperture ring, Distance scale
Physical aperture ring, Distance scale, DoF scale
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
Fujifilm X-mount, Micro Four Thirds-mount, Sony E-mount
Canon EF-M-mount, Sony E-mount
Optical Formula | Elements
13 elements
5 elements
11 elements
Optical Formula | Groups
12 groups
5 groups
9 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups
Dimensions
Filter Diameter
77 mm / 3.03 in
52 mm / 2.05 in
Size | Diameter
83 mm / 3.27 in
60 mm / 2.36 in
Size | Length
88 mm / 3.46 in
60 mm / 2.36 in
Weight
497 g / 17.56 oz
248 g / 8.76 oz
245 g / 8.66 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
32.2° Diagonal | 27.0° Horizontal | 18.2° Vertical
180.0° Diagonal (fisheye)
Aperture
f/1.8 ~ f/22
f/1.1 ~ f/16
f/3 ~ f/22
Autofocus
No
No
No
Crop Factor
1.5
1.5
Focal Length
20 mm
50 mm
8 mm
Focal Length (35mm Equivalent)
75.0 mm
12.0 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
No
No
Performance
Min Focus Distance
200 mm / 7.87 in
500 mm / 19.69 in
100 mm / 3.94 in
Production
Accessory
Lens hood included
Lens hood included
Debut
2016-08-08
2017-10-17
2018-03-21
Reviews
Neofiliac score
59%
68%
40%
Pros
- Rather affordable
- Bright maximum aperture
- Light in the hand
- Smooth rendering
- Well priced
- 180° FOV
- Compact and lightweight
Cons
- Lacks weather sealing
- Not the highest grade of build
- Lacks weather sealing
- Not very sharp
- Lacks front filter thread
- Lacks weather sealing
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