Compare Samyang 21mm F1.4 ED AS UMC CS vs Samyang 20mm F1.8 ED AS UMC vs Sony FE 16-35mm F4 ZA
Construction
Aperture Blades
9 blades, Circular blades
7 blades
7 blades
Colors
Black
Black
Form Factor
Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Wide-Angle Zoom Lens
Image Size
APS-C
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring, Distance scale, DoF scale
Physical aperture ring, Distance scale
Lens Mount
Canon EF-M-mount, Fujifilm X-mount, Micro Four Thirds-mount, Sony E-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
Sony E-mount
Optical Formula | Elements
8 elements
13 elements
12 elements
Optical Formula | Groups
7 groups
12 groups
10 groups
Optical Formula | Special Glass
3 aspherical and 2 ED elements + Ultra Multi Coating groups
Two aspherical + 3 ED elements, Ultra Multi Coating groups
5 Aspherical3 ED Glass groups
Dimensions
Filter Diameter
58 mm / 2.28 in
77 mm / 3.03 in
72 mm / 2.83 in
Size | Diameter
64 mm / 2.52 in
83 mm / 3.27 in
78 mm / 3.07 in
Size | Length
68 mm / 2.68 in
88 mm / 3.46 in
99 mm / 3.90 in
Weight
275 g / 9.72 oz
497 g / 17.56 oz
518 g / 18.30 oz
Function
Angle Of View
69.0° Diagonal | 59.5° Horizontal | 41.7° Vertical
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
107.1° Diagonal | 96.7° Horizontal | 73.7° Vertical (wide) ~ 63.5° Diagonal | 54.4° Horizontal | 37.8° Vertical (tele)
Aperture
f/1.4 ~ f/22
f/1.8 ~ f/22
f/4 ~ f/22
Autofocus
No
No
Yes
Crop Factor
1.5
Focal Length
21 mm
20 mm
16 mm ~ 35 mm
Focal Length (35mm Equivalent)
31.5 mm
Focus Type
Internal
Internal
Extending front
Image Stabilization
No
No
Yes
Weather Resistance
No
No
Yes
Zoom Type
External zoom
Performance
Max Magnification
0.19x
Min Focus Distance
280 mm / 11.02 in
200 mm / 7.87 in
280 mm / 11.02 in
Production
Accessory
Lens hood included
Lens hood included
Lens hood included
Debut
2015-09-21
2016-08-08
2014-09-15
Model Name
SEL1635Z
Reviews
Neofiliac score
50%
59%
71%
Pros
- Bright maximum aperture
- Very sharp
- Good color rendition
- Rather affordable
- Sharp towards the wider end
- Weather-sealed
- Optically stabilized
Cons
- Lacks weather sealing
- Lacks weather sealing
- Not the highest grade of build
- External zoom without zoom lock
- Metal exterior with plastic interior
- Zeiss tax
- Worse than Sigma 14-24mm F2.8 DG DN
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