Compare Laowa 20mm F4 Zero-D Shift vs Tamron 17-35mm F/2.8-4 Di OSD vs Tamron 28-75mm F/2.8 Di III
Construction
Aperture Blades
14 blades
7 blades
9 blades
Colors
Black
Black
Form Factor
Ultra Wide-Angle Prime Lens
Wide-Angle Zoom Lens
Standard Zoom Lens
Image Size
Medium Format (44x33)
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring, Distance scale, DoF scale
Lens Mount
Canon EF-mount, Canon RF-mount, Fujifilm G-mount, Leica L-mount, Nikon F-mount, Nikon Z-mount, Pentax K-mount, Sony E-mount
Canon EF-mount, Nikon F-mount
Sony E-mount
Motor
Micromotor
Stepper motor
Optical Formula | Elements
16 elements
15 elements
15 elements
Optical Formula | Groups
11 groups
10 groups
12 groups
Optical Formula | Special Glass
2 aspherical elements, 3 ED elements groups
LD/GM elements, BBAR/fluorine coatings groups
Molded glass, hybrid aspherical, low dispersion, extra low dispersion + BBAR and fluorine coatings groups
Dimensions
Filter Diameter
82 mm / 3.23 in
77 mm / 3.03 in
67 mm / 2.64 in
Size | Diameter
95 mm / 3.74 in
84 mm / 3.31 in
73 mm / 2.87 in
Size | Length
91 mm / 3.58 in
93 mm / 3.66 in
117 mm / 4.61 in
Weight
747 g / 26.40 oz
460 g / 16.25 oz
550 g / 19.43 oz
Function
Angle Of View
107.8° Diagonal | 97.4° Horizontal | 74.4° Vertical
103.7° Diagonal | 93.3° Horizontal | 70.4° Vertical (wide) ~ 63.5° Diagonal | 54.4° Horizontal | 37.8° Vertical (tele)
75.4° Diagonal | 65.5° Horizontal | 46.4° Vertical (wide) ~ 32.2° Diagonal | 27.0° Horizontal | 18.2° Vertical (tele)
Aperture
f/4 ~ f/22
f/2.8–4 ~ f/16–22
f/2.8 ~ f/22
Autofocus
No
Yes
Yes
Crop Factor
0.8
Focal Length
20 mm
17 mm ~ 35 mm
28 mm ~ 75 mm
Focal Length (35mm Equivalent)
15.8 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
Yes
Yes
Zoom Type
External zoom
External zoom
Performance
Max Magnification
0.17x
0.2x
0.34x
Min Focus Distance
250 mm / 9.84 in
280 mm / 11.02 in
190 mm / 7.48 in
Production
Accessory
Lens hood included
Lens hood included
Lens hood included
Debut
2022-03-28
2018-08-06
2018-02-22
Model Name
A037
A036
Reviews
Neofiliac score
75%
69%
69%
Pros
- Comes with physical aperture ring
- Shift functionality
- 14-bladed aperture
- Weather-sealed
- Compact and lightweight
- Weather-sealed
- Excellent image quality
- Rather compact for an f/2.8 standard zoom
Cons
- Large diameter
- External zoom without zoom lock
- Variable aperture
- Not the sharpest
- External zoom without zoom lock
- Not the most solid build
- Only reaches 28mm
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