Compare Samyang 20mm F1.8 ED AS UMC vs KamLan 28mm F1.4 vs SIGMA 30mm F1.4 DC DN
Variants
E-mount
EF-M
L-mount
MFT
Construction
Aperture Blades
7 blades
11 blades
9 blades, Rounded blades
Colors
Black
Form Factor
Ultra Wide-Angle Prime Lens
Normal Prime Lens
Normal Prime Lens
Image Size
Full-Frame
APS-C
APS-C
Lens Barrel
Physical aperture ring, Distance scale
Physical aperture ring, 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-M-mount, Fujifilm X-mount, Micro Four Thirds-mount, Sony E-mount
Motor
Stepper motor
Optical Formula | Elements
13 elements
8 elements
9 elements
Optical Formula | Groups
12 groups
7 groups
7 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups
6 HRI elements groups
1 aspherical and 1 double-sided aspherical groups
Dimensions
Filter Diameter
77 mm / 3.03 in
52 mm / 2.05 in
52 mm / 2.05 in
Size | Diameter
83 mm / 3.27 in
55 mm / 2.17 in
65 mm / 2.56 in
Size | Length
88 mm / 3.46 in
65 mm / 2.56 in
Weight
497 g / 17.56 oz
384 g / 13.57 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
54.5° Diagonal | 46.4° Horizontal | 31.9° Vertical
Aperture
f/1.8 ~ f/22
f/1.4 ~ f/16
f/1.4 ~ f/16
Autofocus
No
No
Crop Factor
1.5
Focal Length
20 mm
28 mm
30 mm
Focal Length (35mm Equivalent)
42.0 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
Yes
Performance
Max Magnification
0.15x
0.14x
Min Focus Distance
200 mm / 7.87 in
250 mm / 9.84 in
300 mm / 11.81 in
Production
Accessory
Lens hood included
Lens Hood: LH586-01, supplied
Debut
2016-08-08
2018-06-01
Made In
Japan
Reviews
Neofiliac score
59%
59%
Pros
- Rather affordable
- Bright maximum aperture
- Smooth rendering
- Rather sharp for what it is
- Compact and light
- Fast autofocus
- Wide angle of view
- Fast and silent
Cons
- Lacks weather sealing
- Not the highest grade of build
- Not the highest build grade
- Difficult to upgrade firmware to V3
- Distorsion is visible in video
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