Site Title

Compare Laowa 20mm F4 Zero-D Shift vs Pentax-DA 645 28-45mm F4.5 vs Pentax 04 Toy Lens Wide

Reviews

Neo score
75%
68%
40%
Pros
  • Comes with physical aperture ring
  • Shift functionality
  • 14-bladed aperture
  • Superb image quality
  • Optically stabilized
  • Internal zoom
  • Weather-sealed
  • Solidly built
  • Extremely light and compact
Cons
  • Large diameter
  • Dark maximum aperture
  • Large and heavy
  • Rather expensive
  • Dark and fixed f/7.1 aperture
  • Not a serious lens

Price

MSRP
4500 USD
Offers (incl. referral links)

Construction

Aperture Blades
14 blades
9 blades, Rounded blades
Colors
Black
Form Factor
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Wide-Angle Prime Lens
Image Size
Medium Format (44x33)
Medium Format (645)
1/1.7"
Lens Barrel
Physical aperture ring, Distance scale, DoF scale
Distance 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
Pentax 645 KAF2 bayonet
Pentax Q-mount
Material
Metal
Plastic mount
Optical Formula | Elements
16 elements
17 elements
4 elements
Optical Formula | Groups
11 groups
12 groups
3 groups
Optical Formula | Special Glass
2 aspherical elements, 3 ED elements groups
HD and Aero Bright coatings groups

Dimensions

Filter Diameter
82 mm / 3.23 in
82 mm / 3.23 in
Size | Diameter
95 mm / 3.74 in
99 mm / 3.90 in
41 mm / 1.61 in
Size | Length
91 mm / 3.58 in
152 mm / 5.98 in
25 mm / 0.98 in
Weight
747 g / 26.40 oz
1470 g / 51.94 oz
21 g / 0.74 oz

Function

Angle Of View
107.8° Diagonal | 97.4° Horizontal | 74.4° Vertical
102.6° Diagonal | 92.1° Horizontal | 69.3° Vertical (wide) ~ 75.6° Diagonal | 65.7° Horizontal | 46.5° Vertical (tele)
73.5° Diagonal | 63.7° Horizontal | 45.0° Vertical
Aperture
f/4 ~ f/22
f/4.5 ~ f/32
f/7.1
Autofocus
No
Yes
No
Crop Factor
0.8
0.6
4.6
Focal Length
20 mm
28 mm ~ 45 mm
6.3 mm
Focal Length (35mm Equivalent)
15.8 mm
17.4 mm ~ 27.9 mm
29.0 mm
Focus Type
Internal
Internal
Image Stabilization
No
Yes
Weather Resistance
Yes
Zoom Type
Internal zoom

Performance

Max Magnification
0.17x
0.21x
0.15x
Min Focus Distance
250 mm / 9.84 in
400 mm / 15.75 in
70 mm / 2.76 in

Production

Accessory
Lens hood included
Lens Hood: 38709 (supplied)
Debut
2022-03-28
2014-08-04
2011-06-23
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