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Compare Laowa 20mm F4 Zero-D Shift vs Fujifilm GF 23mm F4 vs Pentax-DA 645 28-45mm F4.5

Construction

Aperture Blades
14 blades
9 blades, Rounded blades
9 blades, Rounded blades
Colors
Black
Form Factor
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Image Size
Medium Format (44x33)
Medium Format (44x33)
Medium Format (645)
Lens Barrel
Physical aperture ring, Distance scale, DoF scale
Physical aperture ring
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
Fujifilm G-mount
Pentax 645 KAF2 bayonet
Material
Metal
Motor
Linear Motor
Optical Formula | Elements
16 elements
15 elements
17 elements
Optical Formula | Groups
11 groups
12 groups
12 groups
Optical Formula | Special Glass
2 aspherical elements, 3 ED elements groups
2 aspherical, 3 extra-low dispersion, 1 super ED groups
HD and Aero Bright coatings groups

Dimensions

Filter Diameter
82 mm / 3.23 in
82 mm / 3.23 in
82 mm / 3.23 in
Size | Diameter
95 mm / 3.74 in
90 mm / 3.54 in
99 mm / 3.90 in
Size | Length
91 mm / 3.58 in
103 mm / 4.06 in
152 mm / 5.98 in
Weight
747 g / 26.40 oz
845 g / 29.86 oz
1470 g / 51.94 oz

Function

Angle Of View
107.8° Diagonal | 97.4° Horizontal | 74.4° Vertical
99.9° Diagonal
102.6° Diagonal | 92.1° Horizontal | 69.3° Vertical (wide) ~ 75.6° Diagonal | 65.7° Horizontal | 46.5° Vertical (tele)
Aperture
f/4 ~ f/22
f/4 ~ f/32
f/4.5 ~ f/32
Autofocus
No
Yes
Yes
Crop Factor
0.8
0.8
0.6
Focal Length
20 mm
23 mm
28 mm ~ 45 mm
Focal Length (35mm Equivalent)
15.8 mm
18 mm
17.4 mm ~ 27.9 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
No
No
Yes
Weather Resistance
Yes
Yes
Zoom Type
Internal zoom

Performance

Max Magnification
0.17x
0.09x
0.21x
Min Focus Distance
250 mm / 9.84 in
380 mm / 14.96 in
400 mm / 15.75 in

Production

Accessory
Lens hood included
Lens hood included
Lens Hood: 38709 (supplied)
Debut
2022-03-28
2017-04-19
2014-08-04

Reviews

Neofiliac score
75%
80%
68%
Pros
  • Comes with physical aperture ring
  • Shift functionality
  • 14-bladed aperture
  • Weather-sealed
  • Comes with physical aperture ring
  • Very sharp
  • Superb image quality
  • Optically stabilized
  • Internal zoom
  • Weather-sealed
  • Solidly built
Cons
  • Large diameter
  • Quite heavy
  • Dark maximum aperture
  • Dark maximum aperture
  • Large and heavy
  • Rather expensive

Price

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