Site Title

Compare Fujifilm GF 45-100mm F4 vs Pentax-DA 645 28-45mm F4.5

Reviews

Neo score
52%
68%
Pros
  • Superb image quality
  • Optically stabilized
  • Weather-sealed
  • Comes with physical aperture ring
  • Superb image quality
  • Optically stabilized
  • Internal zoom
  • Weather-sealed
  • Solidly built
Cons
  • Dark and variable maximum aperture
  • Very large and heavy
  • External zoom without zoom lock
  • Dark maximum aperture
  • Large and heavy
  • Rather expensive

Price

MSRP
2300 USD
4500 USD
Offers (incl. referral links)

Construction

Aperture Blades
9 blades
9 blades, Rounded blades
Colors
Black
Black
Form Factor
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
Magnesium alloy
Metal
Motor
Linear Motor
Optical Formula | Elements
16 elements
17 elements
Optical Formula | Groups
2 groups
12 groups
Optical Formula | Special Glass
1 ED, 1 super ED, 3 aspherical elements groups
HD and Aero Bright coatings groups

Dimensions

Filter Diameter
82 mm / 3.23 in
82 mm / 3.23 in
Size | Diameter
93 mm / 3.66 in
99 mm / 3.90 in
Size | Length
145 mm / 5.71 in
152 mm / 5.98 in
Weight
1005 g / 35.51 oz
1470 g / 51.94 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)
102.6° Diagonal | 92.1° Horizontal | 69.3° Vertical (wide) ~ 75.6° Diagonal | 65.7° Horizontal | 46.5° Vertical (tele)
Aperture
f/4 ~ f/32
f/4.5 ~ f/32
Autofocus
Yes
Yes
Crop Factor
0.8
0.6
Focal Length
45 mm ~ 100 mm
28 mm ~ 45 mm
Focal Length (35mm Equivalent)
35.6 mm ~ 79.0 mm
17.4 mm ~ 27.9 mm
Focus Type
Internal
Internal
Image Stabilization
Yes (5 stops)
Yes
Weather Resistance
Yes
Yes
Zoom Type
External zoom
Internal zoom

Performance

Max Magnification
0.13x
0.21x
Min Focus Distance
650 mm / 25.59 in
400 mm / 15.75 in

Production

Accessory
Lens hood included
Lens Hood: 38709 (supplied)
Debut
2020-01-23
2014-08-04
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