Compare Fujifilm GF 20-35mm F4 vs Pentax-DA 645 28-45mm F4.5
Construction
Aperture Blades
9 blades, Rounded blades
9 blades, Rounded blades
Colors
Black
Black
Form Factor
Ultra Wide-Angle Zoom Lens
Ultra Wide-Angle Prime Lens
Image Size
Medium Format (44x33)
Medium Format (645)
Lens Barrel
Physical aperture ring
Distance scale
Lens Mount
Fujifilm G-mount
Pentax 645 KAF2 bayonet
Material
Metal
Optical Formula | Elements
14 elements
17 elements
Optical Formula | Groups
10 groups
12 groups
Optical Formula | Special Glass
Three aspherical, one aspherical extra-low dispersion (ED), three ED elements. groups
HD and Aero Bright coatings groups
Dimensions
Filter Diameter
82 mm / 3.23 in
82 mm / 3.23 in
Size | Diameter
89 mm / 3.50 in
99 mm / 3.90 in
Size | Length
113 mm / 4.45 in
152 mm / 5.98 in
Weight
725 g / 25.62 oz
1470 g / 51.94 oz
Function
Angle Of View
107.8° Diagonal | 97.4° Horizontal | 74.4° Vertical (wide) ~ 76.1° Diagonal | 66.1° Horizontal | 46.9° Vertical (tele)
102.6° Diagonal | 92.1° Horizontal | 69.3° Vertical (wide) ~ 75.6° Diagonal | 65.7° Horizontal | 46.5° Vertical (tele)
Aperture
f/4 ~ f/22
f/4.5 ~ f/32
Autofocus
Yes
Yes
Crop Factor
0.8
0.6
Focal Length
20 mm ~ 35 mm
28 mm ~ 45 mm
Focal Length (35mm Equivalent)
15.8 mm ~ 27.7 mm
17.4 mm ~ 27.9 mm
Focus Type
Internal
Image Stabilization
Yes
Weather Resistance
Yes
Yes
Zoom Type
Internal zoom
Internal zoom
Performance
Max Magnification
0.21x
Min Focus Distance
350 mm / 13.78 in
400 mm / 15.75 in
Production
Accessory
Lens Hood: 38709 (supplied)
Debut
2022-09-08
2014-08-04
Reviews
Neofiliac score
89%
68%
Pros
- Internal zoom
- Weather-sealed
- Comes with physical aperture ring
- Superb build quality
- Great image quality
- Superb image quality
- Optically stabilized
- Internal zoom
- Weather-sealed
- Solidly built
Cons
- Not the brightest
- Dark maximum aperture
- Large and heavy
- Rather expensive
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