Compare Samyang 20mm F1.8 ED AS UMC vs Laowa 15mm f/4 1:1 Macro vs Laowa 50mm f/2.8 2X Ultra Macro
Construction
Aperture Blades
7 blades
14 blades
7 blades
Colors
Black
Form Factor
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Short Telephoto Prime Lens
Image Size
Full-Frame
Full-Frame
MFT
Lens Barrel
Physical aperture ring, Distance scale
Physical aperture ring
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, Leica L-mount, Nikon F-mount, Pentax K-mount, Sony A-mount, Sony E-mount
Micro Four Thirds-mount
Optical Formula | Elements
13 elements
12 elements
14 elements
Optical Formula | Groups
12 groups
9 groups
10 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups
Three high refractive and one ED element groups
Dimensions
Filter Diameter
77 mm / 3.03 in
77 mm / 3.03 in
49 mm / 1.93 in
Size | Diameter
83 mm / 3.27 in
84 mm / 3.31 in
54 mm / 2.13 in
Size | Length
88 mm / 3.46 in
65 mm / 2.56 in
79 mm / 3.11 in
Weight
497 g / 17.56 oz
410 g / 14.49 oz
240 g / 8.48 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
110.6° Diagonal | 100.4° Horizontal | 77.3° Vertical
24.4° Diagonal | 20.4° Horizontal | 13.7° Vertical
Aperture
f/1.8 ~ f/22
f/4 ~ f/32
f/2.8 ~ f/22
Autofocus
No
No
No
Crop Factor
2.0
Focal Length
20 mm
15 mm
50 mm
Focal Length (35mm Equivalent)
100.0 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
No
Performance
Max Magnification
1x
2x
Min Focus Distance
200 mm / 7.87 in
470 mm / 18.50 in
140 mm / 5.51 in
Production
Accessory
Lens hood included
Lens hood included
Debut
2016-08-08
2015-06-23
2020-08-18
Made In
China
China
Reviews
Neofiliac score
59%
50%
68%
Pros
- Rather affordable
- 1:1 reproduction
- One of the widest macro lens for FF
- Unique +/- 6mm shift feature
- Exceptional 2x maximum reproduction
- Very light for a 2x macro lens
- Quite affordable
- Supposedly apochromatic design
Cons
- Lacks weather sealing
- Not the highest grade of build
- Dark maximum aperture
- Lacks weather sealing
- No EXIF communication
- Not the best optically
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