Compare Samyang 20mm F1.8 ED AS UMC vs Zeiss Milvus 21mm F2.8 vs Zeiss Milvus 35mm F1.4
Construction
Aperture Blades
7 blades
9 blades
Colors
Black
Form Factor
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Wide-Angle Prime Lens
Image Size
Full-Frame
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring, Distance scale
Physical aperture ring, DoF 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
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
4 APD groups
ED elements + T* coating groups
Dimensions
Filter Diameter
77 mm / 3.03 in
82 mm / 3.23 in
72 mm / 2.83 in
Size | Diameter
83 mm / 3.27 in
72 mm / 2.83 in
85 mm / 3.35 in
Size | Length
88 mm / 3.46 in
95 mm / 3.74 in
126 mm / 4.96 in
Weight
497 g / 17.56 oz
851 g / 30.07 oz
1174 g / 41.48 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
91.7° Diagonal | 81.2° Horizontal | 59.5° Vertical
63.5° Diagonal | 54.4° Horizontal | 37.8° Vertical
Aperture
f/1.8 ~ f/22
f/2.8 ~ f/22
f/1.4 ~ f/16
Autofocus
No
No
No
Focal Length
20 mm
21 mm
35 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
Yes
Yes
Performance
Max Magnification
0.2
0.22
Min Focus Distance
200 mm / 7.87 in
220 mm / 8.66 in
300 mm / 11.81 in
Production
Accessory
Lens hood included
Lens hood included
Lens hood included
Debut
2016-08-08
2015-09-10
2017-06-21
Made In
Japan
Japan
Reviews
Neofiliac score
59%
78%
86%
Pros
- Rather affordable
- Weather-sealed
- F-mount with physical aperture ring
- Exceptional image quality
- Solid build quality
- Bright maximum aperture
- Weather-sealed
- F-mount with physical aperture ring
- Excellent image quality
Cons
- Lacks weather sealing
- Not the highest grade of build
- On the heavy side
- On the heavy side
- Quite large for a 35mm lens
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