Compare Samyang 20mm F1.8 ED AS UMC vs Samyang MF 14mm F2.8 MK2 vs Sony 50mm F2.5 G
Construction
Aperture Blades
7 blades
9 blades
7 blades
Colors
Black
Form Factor
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Normal Prime Lens
Image Size
Full-Frame
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring, Distance scale
Physical aperture ring, Distance scale, DoF 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, Canon EF-M-mount, Fujifilm X-mount, Micro Four Thirds-mount, Nikon F-mount, Sony E-mount
Sony E-mount
Material
Aluminum alloy
Motor
Linear Motor
Optical Formula | Elements
13 elements
14 elements
9 elements
Optical Formula | Groups
12 groups
10 groups
9 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups
1 ASP, 1 hybrid ASP, 2 ED, 3 HR elements + UMC coating groups
1 ED and 2 aspherical elements groups
Dimensions
Filter Diameter
77 mm / 3.03 in
49 mm / 1.93 in
Size | Diameter
83 mm / 3.27 in
87 mm / 3.43 in
68 mm / 2.68 in
Size | Length
88 mm / 3.46 in
96 mm / 3.78 in
45 mm / 1.77 in
Weight
497 g / 17.56 oz
649 g / 22.93 oz
174 g / 6.15 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
114.2° Diagonal | 104.3° Horizontal | 81.2° Vertical
46.8° Diagonal | 39.6° Horizontal | 27.0° Vertical
Aperture
f/1.8 ~ f/22
f/2.8 ~ f/22
f/2.5 ~ f/22
Autofocus
No
No
Yes
Focal Length
20 mm
14 mm
50 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
Yes
Yes
Performance
Max Magnification
0.08x
0.21x
Min Focus Distance
200 mm / 7.87 in
280 mm / 11.02 in
310 mm / 12.20 in
Production
Accessory
Lens hood included
Lens hood included
Lens hood included
Debut
2016-08-08
2020-05-25
2021-03-23
Made In
Korea
Model Name
SEL50F25G
Reviews
Neofiliac score
59%
59%
95%
Pros
- Rather affordable
- Weather-sealed
- Improved focus ring
- Good build quality and ergonomics
- Compact and lightweight
- Weather-sealed
- Comes with physical aperture ring
- High contrast
Cons
- Lacks weather sealing
- Not the highest grade of build
- Lacks front filter thread
- Low maximum magnification
- Strong vignetting
- Not very sharp
- Focus breathing
- Relatively small f/1.8 aperture
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