Compare Laowa 20mm F4 Zero-D Shift vs Canon RF 28-70mm F2 vs Canon RF 15-30mm F4.5-6.3
Construction
Aperture Blades
14 blades
9 blades
7 blades
Colors
Black
Black
Form Factor
Ultra Wide-Angle Prime Lens
Standard Zoom Lens
Ultra Wide-Angle Zoom Lens
Image Size
Medium Format (44x33)
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring, Distance scale, DoF scale
Distance 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 RF-mount
Canon RF-mount
Motor
Ring-type ultrasonic
Stepper motor
Optical Formula | Elements
16 elements
19 elements
13 elements
Optical Formula | Groups
11 groups
13 groups
11 groups
Optical Formula | Special Glass
2 aspherical elements, 3 ED elements groups
UD + aspherical elements, Air Sphere, SWC and fluorine coatings groups
Two ultra-low dispersion elements and one aspherical element. Uses Canon’s Super Spectra Coating (SSC). groups
Dimensions
Filter Diameter
82 mm / 3.23 in
95 mm / 3.74 in
67 mm / 2.64 in
Size | Diameter
95 mm / 3.74 in
104 mm / 4.09 in
77 mm / 3.03 in
Size | Length
91 mm / 3.58 in
140 mm / 5.51 in
88 mm / 3.46 in
Weight
747 g / 26.40 oz
1430 g / 50.53 oz
390 g / 13.78 oz
Function
Angle Of View
107.8° Diagonal | 97.4° Horizontal | 74.4° Vertical
75.4° Diagonal | 65.5° Horizontal | 46.4° Vertical (wide) ~ 34.4° Diagonal | 28.8° Horizontal | 19.5° Vertical (tele)
110.6° Diagonal | 100.4° Horizontal | 77.3° Vertical (wide) ~ 71.6° Diagonal | 61.9° Horizontal | 43.6° Vertical (tele)
Aperture
f/4 ~ f/22
f/2 ~ f/22
f/4.5–6.3 ~ f/22–32
Autofocus
No
Yes
Yes
Crop Factor
0.8
Focal Length
20 mm
28 mm ~ 70 mm
15 mm ~ 30 mm
Focal Length (35mm Equivalent)
15.8 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
Yes
Weather Resistance
Yes
No
Zoom Type
External zoom
External zoom
Performance
Max Magnification
0.17x
0.18x
Min Focus Distance
250 mm / 9.84 in
390 mm / 15.35 in
130 mm / 5.12 in
Production
Accessory
Lens hood included
Lens hood included
Debut
2022-03-28
2018-09-05
2022-07-12
Reviews
Neofiliac score
75%
52%
37%
Pros
- Comes with physical aperture ring
- Shift functionality
- 14-bladed aperture
- Exceptional f/2 zoom
- Superb sharpness
- Weather-sealed
- Versatile multi-control ring
- Affordable
- Interesting zoom range
- Stabilized
Cons
- Large diameter
- Large and heavy
- External zoom without zoom lock
- Dark maximum aperture
- External zoom without zoom lock
- Lacks weather sealing
- Low build quality
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