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Compare Fujifilm GF 45-100mm F4 vs Fujifilm GF 20-35mm F4 vs Pentax-FA645 35mm F3.5

Construction

Aperture Blades
9 blades
9 blades, Rounded blades
9 blades, Rounded aperture
Colors
Black
Black
Form Factor
Zoom Lens
Ultra Wide-Angle Zoom Lens
Ultra Wide-Angle Prime Lens
Image Size
Medium Format (44x33)
Medium Format (44x33)
Medium Format (645)
Lens Barrel
Physical aperture ring
Physical aperture ring
Physical aperture ring, Distance scale
Lens Mount
Fujifilm G-mount
Fujifilm G-mount
Pentax 645 KAF2 bayonet
Material
Magnesium alloy
Motor
Linear Motor
Optical Formula | Elements
16 elements
14 elements
10 elements
Optical Formula | Groups
2 groups
10 groups
7 groups
Optical Formula | Special Glass
1 ED, 1 super ED, 3 aspherical elements groups
Three aspherical, one aspherical extra-low dispersion (ED), three 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
82 mm / 3.23 in
Size | Diameter
93 mm / 3.66 in
89 mm / 3.50 in
88 mm / 3.46 in
Size | Length
145 mm / 5.71 in
113 mm / 4.45 in
90 mm / 3.54 in
Weight
1005 g / 35.51 oz
725 g / 25.62 oz
570 g / 20.14 oz

Function

Angle Of View
62.7° Diagonal | 53.7° Horizontal | 37.3° Vertical (wide) ~ 30.7° Diagonal | 25.7° Horizontal | 17.3° Vertical (tele)
107.8° Diagonal | 97.4° Horizontal | 74.4° Vertical (wide) ~ 76.1° Diagonal | 66.1° Horizontal | 46.9° Vertical (tele)
89.9° Diagonal | 79.4° Horizontal | 57.9° Vertical
Aperture
f/4 ~ f/32
f/4 ~ f/22
f/3.5 ~ f/32
Autofocus
Yes
Yes
Yes
Crop Factor
0.8
0.8
0.6
Focal Length
45 mm ~ 100 mm
20 mm ~ 35 mm
35 mm
Focal Length (35mm Equivalent)
35.6 mm ~ 79.0 mm
15.8 mm ~ 27.7 mm
21.7 mm
Focus Type
Internal
Internal
Image Stabilization
Yes (5 stops)
No
Weather Resistance
Yes
Yes
No
Zoom Type
External zoom
Internal zoom

Performance

Max Magnification
0.13x
0.25x
Min Focus Distance
650 mm / 25.59 in
350 mm / 13.78 in
300 mm / 11.81 in

Production

Accessory
Lens hood included
Lens Hood: PH-RBE82 (supplied)
Debut
2020-01-23
2022-09-08
2015-11-11

Reviews

Neofiliac score
52%
89%
68%
Pros
  • Superb image quality
  • Optically stabilized
  • Weather-sealed
  • Comes with physical aperture ring
  • Internal zoom
  • Weather-sealed
  • Comes with physical aperture ring
  • Superb build quality
  • Great image quality
  • 0.25x reproduction ratio
  • Rather compact for what it is
  • Comes with physical aperture ring
Cons
  • Dark and variable maximum aperture
  • Very large and heavy
  • External zoom without zoom lock
  • Not the brightest
  • Lacks weather sealing

Price

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