Compare Samyang 35mm F1.4 AS UMC vs Samyang 20mm F1.8 ED AS UMC vs Zeiss Loxia 25mm F2.4
Construction
Aperture Blades
7 blades
Colors
Black
Form Factor
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, DoF scale
Physical aperture ring, Distance scale
Physical aperture ring, Distance scale, DoF scale
Lens Mount
Canon EF-mount, Nikon F-mount, Micro Four Thirds-mount, Pentax K-mount, Sony A-mount, Sony E-mount, Samsung NX-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
12 elements
13 elements
10 elements
Optical Formula | Groups
10 groups
12 groups
8 groups
Optical Formula | Special Glass
2 high-refraction glass elements1 aspherical element groups
Two aspherical + 3 ED elements, Ultra Multi Coating groups
1 APD + 2 aspherical elements + T* coating groups
Dimensions
Filter Diameter
77 mm / 3.03 in
77 mm / 3.03 in
52 mm / 2.05 in
Size | Diameter
63 mm / 2.48 in
83 mm / 3.27 in
62 mm / 2.44 in
Size | Length
112 mm / 4.41 in
88 mm / 3.46 in
75 mm / 2.95 in
Weight
660 g / 23.32 oz
497 g / 17.56 oz
393 g / 13.89 oz
Function
Angle Of View
63.5° Diagonal | 54.4° Horizontal | 37.8° Vertical
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
81.8° Diagonal | 71.5° Horizontal | 51.3° Vertical
Aperture
f/1.4 ~ f/22
f/1.8 ~ f/22
f/2.4 ~ f/22
Autofocus
No
No
No
Focal Length
35 mm
20 mm
25 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
Yes
Performance
Max Magnification
0.16
Min Focus Distance
300 mm / 11.81 in
200 mm / 7.87 in
250 mm / 9.84 in
Production
Accessory
Lens hood included
Debut
2010-09-16
2016-08-08
2018-02-14
Made In
Japan
Reviews
Neofiliac score
68%
59%
86%
Pros
- Bright maximum aperture
- Good level of resolution
- Rather affordable
- Weather-sealed
- Smooth focus ring
- Excellent image quality
- Declickable aperture ring
Cons
- Quite large and heavy
- Lacks weather sealing
- Not the highest grade of build
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