Compare Zeiss Otus 28mm F1.4 vs Samyang 20mm F1.8 ED AS UMC vs Zeiss Otus 55mm F1.4
Construction
Aperture Blades
7 blades
Colors
Black
Black
Form Factor
Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Normal Prime Lens
Image Size
Full-Frame
Full-Frame
Full-Frame
Lens Barrel
Distance scale
Physical aperture ring, Distance scale
Distance scale, DoF scale
Lens Mount
Canon EF-mount, Nikon F-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
Material
Magnesium alloy
Metal barrel, metal mout
Optical Formula | Elements
16 elements
13 elements
12 elements
Optical Formula | Groups
13 groups
12 groups
10 groups
Optical Formula | Special Glass
Aspherical + APD elements, T* coating groups
Two aspherical + 3 ED elements, Ultra Multi Coating groups
1 double-sided aspheric element, 6 anomalous partial dispersion glass elements groups
Dimensions
Filter Diameter
95 mm / 3.74 in
77 mm / 3.03 in
77 mm / 3.03 in
Size | Diameter
88 mm / 3.46 in
83 mm / 3.27 in
92 mm / 3.62 in
Size | Length
137 mm / 5.39 in
88 mm / 3.46 in
141 mm / 5.55 in
Weight
1390 g / 49.12 oz
497 g / 17.56 oz
970 g / 34.28 oz
Function
Angle Of View
75.4° Diagonal | 65.5° Horizontal | 46.4° Vertical
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
43.0° Diagonal | 36.2° Horizontal | 24.6° Vertical
Aperture
f/1.4 ~ f/16
f/1.8 ~ f/22
f/1.4 ~ f/16
Autofocus
No
No
No
Focal Length
28 mm
20 mm
55 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
Performance
Max Magnification
0.18
0.15
Min Focus Distance
300 mm / 11.81 in
200 mm / 7.87 in
500 mm / 19.69 in
Production
Accessory
Lens hood included
Lens hood included
Lens hood included
Debut
2015-10-14
2016-08-08
2013-10-07
Reviews
Neofiliac score
70%
59%
61%
Pros
- Bright maximum aperture
- The finest built quality
- Exceptional image quality
- Gorgeous rendering
- Rather affordable
- Bright maximum aperture
- The finest built quality
- The best image quality found on a photographic lens
- Exceptional rendering
Cons
- Quite large
- On the heavy side
- Rubber focus ring not as nice as metal ones
- Lacks weather sealing
- Not the highest grade of build
- Large physical size with large diameter and long barrel
- On the heavy side
- Rubber focus ring not as nice as metal ones
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