Compare Laowa 20mm F4 Zero-D Shift vs Tamron 17-28mm F/2.8
Construction
Aperture Blades
14 blades
9 blades
Colors
Black
Form Factor
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Zoom Lens
Image Size
Medium Format (44x33)
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
Sony E-mount
Motor
Stepper motor
Optical Formula | Elements
16 elements
13 elements
Optical Formula | Groups
11 groups
11 groups
Optical Formula | Special Glass
2 aspherical elements, 3 ED elements groups
LE and ED elements + BBAR and fluorine coating groups
Dimensions
Filter Diameter
82 mm / 3.23 in
67 mm / 2.64 in
Size | Diameter
95 mm / 3.74 in
73 mm / 2.87 in
Size | Length
91 mm / 3.58 in
99 mm / 3.90 in
Weight
747 g / 26.40 oz
420 g / 14.84 oz
Function
Angle Of View
107.8° Diagonal | 97.4° Horizontal | 74.4° Vertical
103.7° Diagonal | 93.3° Horizontal | 70.4° Vertical (wide) ~ 75.4° Diagonal | 65.5° Horizontal | 46.4° Vertical (tele)
Aperture
f/4 ~ f/22
f/2.8–22 ~ f/2.8–22
Autofocus
No
Yes
Crop Factor
0.8
Focal Length
20 mm
17 mm ~ 28 mm
Focal Length (35mm Equivalent)
15.8 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
Weather Resistance
Yes
Performance
Max Magnification
0.17x
0.19x
Min Focus Distance
250 mm / 9.84 in
190 mm / 7.48 in
Production
Accessory
Lens hood included
Lens hood included
Debut
2022-03-28
2019-02-20
Model Name
A046
Reviews
Neofiliac score
75%
78%
Pros
- Comes with physical aperture ring
- Shift functionality
- 14-bladed aperture
- Very good performance at wide end
- Rather compact for an ultra-wide lens
- Weather-sealed
Cons
- Large diameter
- Not as sharp as other f/2.8 alternatives
- Relatively slow autofocus
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