Compare Samyang 21mm F1.4 ED AS UMC CS vs Samyang 10mm F2.8 ED AS NCS CS vs Zeiss Milvus 18mm F2.8
Construction
Aperture Blades
9 blades, Circular blades
6 blades, Manual aperture setting via lens ring
Colors
Black
Form Factor
Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Image Size
APS-C
APS-C
Full-Frame
Lens Barrel
Physical aperture ring, Distance scale, DoF scale
Physical aperture ring, Distance scale, DoF scale
Physical aperture ring, Distance scale, DoF scale
Lens Mount
Canon EF-M-mount, Fujifilm X-mount, Micro Four Thirds-mount, Sony E-mount
Canon EF-M-mount, Canon EF-mount, Micro Four Thirds-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
Optical Formula | Elements
8 elements
14 elements
14 elements
Optical Formula | Groups
7 groups
10 groups
12 groups
Optical Formula | Special Glass
3 aspherical and 2 ED elements + Ultra Multi Coating groups
2 aspherical elements, 1 ED glass element groups
4 APD, 2 ASPH elements, Zeiss T* coating groups
Dimensions
Filter Diameter
58 mm / 2.28 in
77 mm / 3.03 in
Size | Diameter
64 mm / 2.52 in
86 mm / 3.39 in
73 mm / 2.87 in
Size | Length
68 mm / 2.68 in
77 mm / 3.03 in
93 mm / 3.66 in
Weight
275 g / 9.72 oz
580 g / 20.49 oz
721 g / 25.48 oz
Function
Angle Of View
69.0° Diagonal | 59.5° Horizontal | 41.7° Vertical
110.6° Diagonal | 100.4° Horizontal | 77.3° Vertical
100.5° Diagonal | 90.0° Horizontal | 67.4° Vertical
Aperture
f/1.4 ~ f/22
f/2.8 ~ f/22
f/2.8 ~ f/22
Autofocus
No
No
No
Crop Factor
1.5
1.5
Focal Length
21 mm
10 mm
18 mm
Focal Length (35mm Equivalent)
31.5 mm
15.0 mm
Focus Type
Internal
Image Stabilization
No
No
No
Weather Resistance
No
Yes
Performance
Max Magnification
0.14
Min Focus Distance
280 mm / 11.02 in
250 mm / 9.84 in
250 mm / 9.84 in
Production
Accessory
Lens hood included
Lens Hood: Integrated hood (supplied)
Lens hood included
Debut
2015-09-21
2013-12-06
2016-09-08
Made In
Japan
Reviews
Neofiliac score
50%
40%
86%
Pros
- Bright maximum aperture
- Very sharp
- Good color rendition
- One of the widest rectilinear lens for APS-C
- Reasonable IQ
- Bright f/2.8 aperture
- Weather-sealed
- Exceptional image quality
- Solid build quality
- F-mount with physical aperture ring
Cons
- Lacks weather sealing
- Lacks front filter thread
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