Compare Samyang 20mm F1.8 ED AS UMC vs Zeiss Otus 28mm F1.4 vs Zeiss Milvus 35mm F1.4
Construction
Aperture Blades
7 blades
9 blades
Colors
Black
Black
Form Factor
Ultra Wide-Angle Prime Lens
Wide-Angle Prime Lens
Wide-Angle Prime Lens
Image Size
Full-Frame
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring, Distance scale
Distance scale
Physical aperture ring, 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
Canon EF-mount, Nikon F-mount
Canon EF-mount, Nikon F-mount
Material
Magnesium alloy
Optical Formula | Elements
13 elements
16 elements
14 elements
Optical Formula | Groups
12 groups
13 groups
11 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups
Aspherical + APD elements, T* coating groups
ED elements + T* coating groups
Dimensions
Filter Diameter
77 mm / 3.03 in
95 mm / 3.74 in
72 mm / 2.83 in
Size | Diameter
83 mm / 3.27 in
88 mm / 3.46 in
85 mm / 3.35 in
Size | Length
88 mm / 3.46 in
137 mm / 5.39 in
126 mm / 4.96 in
Weight
497 g / 17.56 oz
1390 g / 49.12 oz
1174 g / 41.48 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
75.4° Diagonal | 65.5° Horizontal | 46.4° Vertical
63.5° Diagonal | 54.4° Horizontal | 37.8° Vertical
Aperture
f/1.8 ~ f/22
f/1.4 ~ f/16
f/1.4 ~ f/16
Autofocus
No
No
No
Focal Length
20 mm
28 mm
35 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
Yes
Performance
Max Magnification
0.18
0.22
Min Focus Distance
200 mm / 7.87 in
300 mm / 11.81 in
300 mm / 11.81 in
Production
Accessory
Lens hood included
Lens hood included
Lens hood included
Debut
2016-08-08
2015-10-14
2017-06-21
Made In
Japan
Reviews
Neofiliac score
59%
70%
86%
Pros
- Rather affordable
- Bright maximum aperture
- The finest built quality
- Exceptional image quality
- Gorgeous rendering
- Bright maximum aperture
- Weather-sealed
- F-mount with physical aperture ring
- Excellent image quality
Cons
- Lacks weather sealing
- Not the highest grade of build
- Quite large
- On the heavy side
- Rubber focus ring not as nice as metal ones
- On the heavy side
- Quite large for a 35mm lens
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