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Compare Laowa 25mm f/2.8 2.5-5X Ultra Macro vs Laowa 17mm F4 Zero-D GFX vs Pentax-FA645 35mm F3.5

Construction

Aperture Blades
8 blades
7 blades
9 blades, Rounded aperture
Colors
Black
Form Factor
Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Image Size
Full-Frame
Medium Format (44x33)
Medium Format (645)
Lens Barrel
Physical aperture ring
Physical aperture ring, Distance scale, DoF scale
Physical aperture ring, Distance scale
Lens Mount
Canon EF-mount, Canon RF-mount, Leica L-mount, Nikon F-mount, Nikon Z-mount, Pentax K-mount, Sony E-mount
Fujifilm G-mount
Pentax 645 KAF2 bayonet
Optical Formula | Elements
8 elements
21 elements
10 elements
Optical Formula | Groups
6 groups
14 groups
7 groups
Optical Formula | Special Glass
1 low-dispersion element groups
2 aspherical + 3 ED elements groups
HRI and hybrid aspherical elements, HD and SP coatings groups

Dimensions

Filter Diameter
86 mm / 3.39 in
82 mm / 3.23 in
Size | Diameter
82 mm / 3.23 in
77 mm / 3.03 in
88 mm / 3.46 in
Size | Length
65 mm / 2.56 in
125 mm / 4.92 in
90 mm / 3.54 in
Weight
400 g / 14.13 oz
829 g / 29.29 oz
570 g / 20.14 oz

Function

Angle Of View
81.8° Diagonal | 71.5° Horizontal | 51.3° Vertical
116.4° Diagonal | 106.5° Horizontal | 83.6° Vertical
89.9° Diagonal | 79.4° Horizontal | 57.9° Vertical
Aperture
f/2.8 ~ f/16
f/4 ~ f/22
f/3.5 ~ f/32
Autofocus
No
No
Yes
Crop Factor
0.8
0.6
Focal Length
25 mm
17 mm
35 mm
Focal Length (35mm Equivalent)
13.4 mm
21.7 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
No
No

Performance

Max Magnification
5x
0.28x
0.25x
Min Focus Distance
170 mm / 6.69 in
200 mm / 7.87 in
300 mm / 11.81 in

Production

Accessory
Lens hood sold separately
Lens Hood: PH-RBE82 (supplied)
Debut
2018-03-07
2018-04-20
2015-11-11
Made In
China
China

Reviews

Neofiliac score
31%
40%
68%
Pros
  • Exceptional maximum magnification
  • Optional LED ring light and tripod collar available
  • Widest rectilinear lens for G-mount medium format
  • Low distortion
  • Good optical performance
  • 0.25x reproduction ratio
  • Rather compact for what it is
  • Comes with physical aperture ring
Cons
  • Not stabilized
  • No lens hood available
  • Lacks weather sealing
  • On the heavy side
  • Lacks weather sealing
  • Lacks weather sealing

Price

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