Compare Samyang 20mm F1.8 ED AS UMC vs Samyang AF 14mm F2.8
Variants
Canon RF
Sony FE
Construction
Aperture Blades
7 blades
7 blades
Colors
Black
Form Factor
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Image Size
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring, Distance 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
Optical Formula | Elements
13 elements
14 elements
Optical Formula | Groups
12 groups
10 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups
2 ED, 3 aspherical, 1 HR + Ultra Multi Coating groups
Dimensions
Filter Diameter
77 mm / 3.03 in
Size | Diameter
83 mm / 3.27 in
86 mm / 3.39 in
Size | Length
88 mm / 3.46 in
Weight
497 g / 17.56 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
114.2° Diagonal | 104.3° Horizontal | 81.2° Vertical
Aperture
f/1.8 ~ f/22
f/2.8 ~ f/22
Autofocus
No
Yes
Focal Length
20 mm
14 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
Weather Resistance
No
No
Performance
Max Magnification
0.12x
Min Focus Distance
200 mm / 7.87 in
200 mm / 7.87 in
Production
Accessory
Lens hood included
Lens hood included
Debut
2016-08-08
Reviews
Neofiliac score
59%
40%
Pros
- Rather affordable
- Rather compact and lightweight
- Wide angle of view
- Good resolution
Cons
- Lacks weather sealing
- Not the highest grade of build
- Lacks front filter thread
- Lacks weather sealing
- Notable distortion
- Strong vignetting
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