Compare Samyang 20mm F1.8 ED AS UMC vs Zeiss Milvus 15mm F2.8 vs Zeiss Milvus 50mm F2
Construction
Aperture Blades
7 blades
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
Distance scale, DoF scale
Tripod collar, 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
Canon EF-mount, Nikon F-mount
Canon EF-mount, Nikon F-mount
Optical Formula | Elements
13 elements
15 elements
8 elements
Optical Formula | Groups
12 groups
12 groups
6 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups
5 APD + 4 APSH elements groups
T* coating groups
Dimensions
Filter Diameter
77 mm / 3.03 in
95 mm / 3.74 in
67 mm / 2.64 in
Size | Diameter
83 mm / 3.27 in
102 mm / 4.02 in
81 mm / 3.19 in
Size | Length
88 mm / 3.46 in
100 mm / 3.94 in
75 mm / 2.95 in
Weight
497 g / 17.56 oz
947 g / 33.46 oz
730 g / 25.80 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
110.6° Diagonal | 100.4° Horizontal | 77.3° Vertical
46.8° Diagonal | 39.6° Horizontal | 27.0° Vertical
Aperture
f/1.8 ~ f/22
f/2.8 ~ f/22
f/2 ~ f/22
Autofocus
No
No
No
Focal Length
20 mm
15 mm
50 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
Yes
Yes
Performance
Max Magnification
0.11
0.5
Min Focus Distance
200 mm / 7.87 in
250 mm / 9.84 in
240 mm / 9.45 in
Production
Accessory
Lens hood included
Lens hood included
Lens hood included
Debut
2016-08-08
2016-09-08
2015-09-10
Made In
Japan
Japan
Reviews
Neofiliac score
59%
70%
86%
Pros
- Rather affordable
- Weather-sealed
- Exceptional image quality
- Solid build quality
- F-mount with physical aperture ring
- Weather-sealed
- 0.5x maximum magnification
- Solid construction
- Quite compact for a macro lens
- F-mount with physical aperture ring
Cons
- Lacks weather sealing
- Not the highest grade of build
- Barrel with large diameter
- On the heavy side
- Heavy for a 50mm
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