Compare Samyang 20mm F1.8 ED AS UMC vs Laowa 100mm f/2.8 2X Ultra Macro vs Viltrox 24mm F1.8
Connectivity
Ports
USB-C
Construction
Aperture Blades
7 blades
13 blades, Nikon and Pentax mounts have 7 aperture blades.
9
Colors
Black
Form Factor
Ultra Wide-Angle Prime Lens
Short Telephoto Prime Lens
Autofocus lens for mirrorless cameras
Image Size
Full-Frame
Full-Frame
Full-Frame
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-mount, Canon RF-mount, Leica L-mount, Nikon F-mount, Nikon Z-mount, Pentax K-mount, Sony E-mount
E-mount, Z-mount
Motor
STM+Lead screw stepping motor
Optical Formula | Elements
13 elements
12 elements
11 elements
Optical Formula | Groups
12 groups
10 groups
9 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups
Dimensions
Filter Diameter
77 mm / 3.03 in
67 mm / 2.64 in
55 mm
Size | Diameter
83 mm / 3.27 in
72 mm / 2.83 in
70 mm
Size | Length
88 mm / 3.46 in
125 mm / 4.92 in
85 mm
Weight
497 g / 17.56 oz
638 g / 22.54 oz
340 g
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
24.4° Diagonal | 20.4° Horizontal | 13.7° Vertical
84°
Aperture
f/1.8 ~ f/22
f/2.8 ~ f/22
F/1.8 - f/16
Autofocus
No
No
Focal Length
20 mm
100 mm
24 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
Weather Resistance
No
No
Performance
Max Magnification
2x
0.1x
Min Focus Distance
200 mm / 7.87 in
250 mm / 9.84 in
0.3 m
Production
Accessory
Lens hood included
Debut
2016-08-08
2018-04-20
2021
Made In
China
Reviews
Neofiliac score
59%
59%
Pros
- Rather affordable
- High 2x maximum magnification
- Apochromatic design
- F1.8 aperture
- Fast autofocus
- Very good color rendition
- Good build quality
Cons
- Lacks weather sealing
- Not the highest grade of build
- Lacks weather sealing
- Quite long, though not expectedly so
- Vignetting can be over-corrected
- Not weather sealed
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