Compare Pentax-DA 645 28-45mm F4.5 vs Fujifilm GF 32-64mm F4 vs Fujifilm GF 45-100mm F4
Construction
Aperture Blades
9 blades, Rounded blades
9 blades, Rounded blades
9 blades
Colors
Black
Black
Form Factor
Ultra Wide-Angle Prime Lens
Zoom Lens
Zoom Lens
Image Size
Medium Format (645)
Medium Format (44x33)
Medium Format (44x33)
Lens Barrel
Distance scale
Physical aperture ring
Physical aperture ring
Lens Mount
Pentax 645 KAF2 bayonet
Fujifilm G-mount
Fujifilm G-mount
Material
Metal
Magnesium alloy
Motor
Linear Motor
Linear Motor
Optical Formula | Elements
17 elements
14 elements
16 elements
Optical Formula | Groups
12 groups
11 groups
2 groups
Optical Formula | Special Glass
HD and Aero Bright coatings groups
3 aspheric lenses, 1 ED lens, 1 Super ED lens groups
1 ED, 1 super ED, 3 aspherical elements groups
Dimensions
Filter Diameter
82 mm / 3.23 in
77 mm / 3.03 in
82 mm / 3.23 in
Size | Diameter
99 mm / 3.90 in
93 mm / 3.66 in
93 mm / 3.66 in
Size | Length
152 mm / 5.98 in
116 mm / 4.57 in
145 mm / 5.71 in
Weight
1470 g / 51.94 oz
875 g / 30.92 oz
1005 g / 35.51 oz
Function
Angle Of View
102.6° Diagonal | 92.1° Horizontal | 69.3° Vertical (wide) ~ 75.6° Diagonal | 65.7° Horizontal | 46.5° Vertical (tele)
81° Diagonal (wide) ~ 46.3° Diagonal
62.7° Diagonal | 53.7° Horizontal | 37.3° Vertical (wide) ~ 30.7° Diagonal | 25.7° Horizontal | 17.3° Vertical (tele)
Aperture
f/4.5 ~ f/32
f/4 ~ f/32
f/4 ~ f/32
Autofocus
Yes
Yes
Yes
Crop Factor
0.6
0.8
0.8
Focal Length
28 mm ~ 45 mm
32 mm ~ 64 mm
45 mm ~ 100 mm
Focal Length (35mm Equivalent)
17.4 mm ~ 27.9 mm
25 mm ~ 51 mm
35.6 mm ~ 79.0 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
Yes
No
Yes (5 stops)
Weather Resistance
Yes
Yes
Zoom Type
Internal zoom
External zoom
External zoom
Performance
Max Magnification
0.21x
0.12x
0.13x
Min Focus Distance
400 mm / 15.75 in
500 mm / 19.69 in
650 mm / 25.59 in
Production
Accessory
Lens Hood: 38709 (supplied)
Lens hood included
Lens hood included
Debut
2014-08-04
2017-01-19
2020-01-23
Reviews
Neofiliac score
68%
52%
52%
Pros
- Superb image quality
- Optically stabilized
- Internal zoom
- Weather-sealed
- Solidly built
- Constant maximum aperture
- The
- Superb image quality
- Optically stabilized
- Weather-sealed
- Comes with physical aperture ring
Cons
- Dark maximum aperture
- Large and heavy
- Rather expensive
- External zoom without zoom lock
- Dark and variable maximum aperture
- Very large and heavy
- External zoom without zoom lock
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