Compare Laowa 20mm F4 Zero-D Shift vs Pentax-FA645 35mm F3.5
Construction
Aperture Blades
14 blades
9 blades, Rounded aperture
Form Factor
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Image Size
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
Pentax 645 KAF2 bayonet
Optical Formula | Elements
16 elements
10 elements
Optical Formula | Groups
11 groups
7 groups
Optical Formula | Special Glass
2 aspherical elements, 3 ED elements groups
HRI and hybrid aspherical elements, HD and SP coatings groups
Dimensions
Filter Diameter
82 mm / 3.23 in
82 mm / 3.23 in
Size | Diameter
95 mm / 3.74 in
88 mm / 3.46 in
Size | Length
91 mm / 3.58 in
90 mm / 3.54 in
Weight
747 g / 26.40 oz
570 g / 20.14 oz
Function
Angle Of View
107.8° Diagonal | 97.4° Horizontal | 74.4° Vertical
89.9° Diagonal | 79.4° Horizontal | 57.9° Vertical
Aperture
f/4 ~ f/22
f/3.5 ~ f/32
Autofocus
No
Yes
Crop Factor
0.8
0.6
Focal Length
20 mm
35 mm
Focal Length (35mm Equivalent)
15.8 mm
21.7 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
Weather Resistance
No
Performance
Max Magnification
0.17x
0.25x
Min Focus Distance
250 mm / 9.84 in
300 mm / 11.81 in
Production
Accessory
Lens hood included
Lens Hood: PH-RBE82 (supplied)
Debut
2022-03-28
2015-11-11
Reviews
Neofiliac score
75%
68%
Pros
- Comes with physical aperture ring
- Shift functionality
- 14-bladed aperture
- 0.25x reproduction ratio
- Rather compact for what it is
- Comes with physical aperture ring
Cons
- Large diameter
- Lacks weather sealing
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