Compare Pentax-DA 645 28-45mm F4.5
Construction
Aperture Blades
9 blades, Rounded blades
Colors
Black
Form Factor
Ultra Wide-Angle Prime Lens
Image Size
Medium Format (645)
Lens Barrel
Distance scale
Lens Mount
Pentax 645 KAF2 bayonet
Material
Metal
Optical Formula | Elements
17 elements
Optical Formula | Groups
12 groups
Optical Formula | Special Glass
HD and Aero Bright coatings groups
Dimensions
Filter Diameter
82 mm / 3.23 in
Size | Diameter
99 mm / 3.90 in
Size | Length
152 mm / 5.98 in
Weight
1470 g / 51.94 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)
Aperture
f/4.5 ~ f/32
Autofocus
Yes
Crop Factor
0.6
Focal Length
28 mm ~ 45 mm
Focal Length (35mm Equivalent)
17.4 mm ~ 27.9 mm
Focus Type
Internal
Image Stabilization
Yes
Weather Resistance
Yes
Zoom Type
Internal zoom
Performance
Max Magnification
0.21x
Min Focus Distance
400 mm / 15.75 in
Production
Accessory
Lens Hood: 38709 (supplied)
Debut
2014-08-04
Reviews
Neofiliac score
68%
Pros
- Superb image quality
- Optically stabilized
- Internal zoom
- Weather-sealed
- Solidly built
Cons
- Dark maximum aperture
- Large and heavy
- Rather expensive
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