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Compare Pentax-FA645 35mm F3.5 vs Fujifilm GF 23mm F4 vs Fujifilm GF 45mm F2.8

Construction

Aperture Blades
9 blades, Rounded aperture
9 blades, Rounded blades
9 blades
Colors
Black
Form Factor
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Short Telephoto Prime Lens
Image Size
Medium Format (645)
Medium Format (44x33)
Medium Format
Lens Barrel
Physical aperture ring, Distance scale
Physical aperture ring
Physical aperture ring
Lens Mount
Pentax 645 KAF2 bayonet
Fujifilm G-mount
Fujifilm G-mount
Material
Magnesium alloy
Motor
Linear Motor
Optical Formula | Elements
10 elements
15 elements
11 elements
Optical Formula | Groups
7 groups
12 groups
8 groups
Optical Formula | Special Glass
HRI and hybrid aspherical elements, HD and SP coatings groups
2 aspherical, 3 extra-low dispersion, 1 super ED groups
One aspherical, two ED elements + Nano GI, fluorine coatings groups

Dimensions

Filter Diameter
82 mm / 3.23 in
82 mm / 3.23 in
62 mm / 2.44 in
Size | Diameter
88 mm / 3.46 in
90 mm / 3.54 in
84 mm / 3.31 in
Size | Length
90 mm / 3.54 in
103 mm / 4.06 in
88 mm / 3.46 in
Weight
570 g / 20.14 oz
845 g / 29.86 oz
490 g / 17.31 oz

Function

Angle Of View
89.9° Diagonal | 79.4° Horizontal | 57.9° Vertical
99.9° Diagonal
62.6° Diagonal
Aperture
f/3.5 ~ f/32
f/4 ~ f/32
f/2.8 ~ f/32
Autofocus
Yes
Yes
Yes
Crop Factor
0.6
0.8
0.8
Focal Length
35 mm
23 mm
45 mm
Focal Length (35mm Equivalent)
21.7 mm
18 mm
36 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
Yes
Yes

Performance

Max Magnification
0.25x
0.09x
0.14x
Min Focus Distance
300 mm / 11.81 in
380 mm / 14.96 in
450 mm / 17.72 in

Production

Accessory
Lens Hood: PH-RBE82 (supplied)
Lens hood included
Lens hood included
Debut
2015-11-11
2017-04-19
2017-09-07

Reviews

Neofiliac score
68%
80%
71%
Pros
  • 0.25x reproduction ratio
  • Rather compact for what it is
  • Comes with physical aperture ring
  • Weather-sealed
  • Comes with physical aperture ring
  • Very sharp
  • Relatively lightweight and compact
  • Weather-sealed
  • Comes with physical aperture ring
  • Well made
Cons
  • Lacks weather sealing
  • Quite heavy
  • Dark maximum aperture
  • Slow autofocus

Price

Offers (incl. referral links)
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