Compare Samyang 20mm F1.8 ED AS UMC vs Zeiss Batis 25mm F2 vs Zeiss Batis 85mm F1.8
Construction
Aperture Blades
7 blades
Form Factor
Ultra Wide-Angle Prime Lens
Wide-Angle Prime Lens
Short Telephoto Prime Lens
Image Size
Full-Frame
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring, Distance scale
Distance scale, DoF scale
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
Sony E-mount
Sony E-mount
Optical Formula | Elements
13 elements
10 elements
10 elements
Optical Formula | Groups
12 groups
8 groups
8 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups
4 double-sided aspherical elements, T* coating groups
T* coating groups
Dimensions
Filter Diameter
77 mm / 3.03 in
67 mm / 2.64 in
67 mm / 2.64 in
Size | Diameter
83 mm / 3.27 in
92 mm / 3.62 in
105 mm / 4.13 in
Size | Length
88 mm / 3.46 in
78 mm / 3.07 in
78 mm / 3.07 in
Weight
497 g / 17.56 oz
335 g / 11.84 oz
475 g / 16.78 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
81.8° Diagonal | 71.5° Horizontal | 51.3° Vertical
28.6° Diagonal | 23.9° Horizontal | 16.1° Vertical
Aperture
f/1.8 ~ f/22
f/2 ~ f/22
f/1.8 ~ f/22
Autofocus
No
Yes
Yes
Focal Length
20 mm
25 mm
85 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
No
No
Yes
Weather Resistance
No
Yes
Yes
Performance
Min Focus Distance
200 mm / 7.87 in
200 mm / 7.87 in
800 mm / 31.50 in
Production
Accessory
Lens hood included
Lens hood included
Lens hood included
Debut
2016-08-08
2015-04-22
2015-04-22
Reviews
Neofiliac score
59%
78%
93%
Pros
- Rather affordable
- Weather-sealed
- OLED display
- Quite lightweight for its size
- Optically stabilized
- Weather-sealed
- OLED display
- Rather lightweight for its focal length
Cons
- Lacks weather sealing
- Not the highest grade of build
- Barrel with large diameter
- Barrel with large diameter
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