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Compare Pentax-FA645 35mm F3.5 vs Laowa 17mm F4 Zero-D GFX vs Pentax-FA645 35mm F3.5

Construction

Aperture Blades
9 blades, Rounded aperture
7 blades
9 blades, Rounded aperture
Form Factor
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Image Size
Medium Format (645)
Medium Format (44x33)
Medium Format (645)
Lens Barrel
Physical aperture ring, Distance scale
Physical aperture ring, Distance scale, DoF scale
Physical aperture ring, Distance scale
Lens Mount
Pentax 645 KAF2 bayonet
Fujifilm G-mount
Pentax 645 KAF2 bayonet
Optical Formula | Elements
10 elements
21 elements
10 elements
Optical Formula | Groups
7 groups
14 groups
7 groups
Optical Formula | Special Glass
HRI and hybrid aspherical elements, HD and SP coatings groups
2 aspherical + 3 ED elements groups
HRI and hybrid aspherical elements, HD and SP coatings groups

Dimensions

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

Function

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

Performance

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

Production

Accessory
Lens Hood: PH-RBE82 (supplied)
Lens Hood: PH-RBE82 (supplied)
Debut
2015-11-11
2018-04-20
2015-11-11
Made In
China

Reviews

Neofiliac score
68%
40%
68%
Pros
  • 0.25x reproduction ratio
  • Rather compact for what it is
  • Comes with physical aperture ring
  • 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
  • Lacks weather sealing
  • On the heavy side
  • Lacks weather sealing
  • Lacks weather sealing

Price

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