Compare Canon EF 11-24mm F4 vs Pentax-DA 645 28-45mm F4.5
Construction
Aperture Blades
9 blades, Circular aperture
9 blades, Rounded blades
Colors
Black
Black
Form Factor
Ultra Wide-Angle Zoom Lens
Ultra Wide-Angle Prime Lens
Image Size
Full-Frame
Medium Format (645)
Lens Barrel
Distance scale
Distance scale
Lens Mount
Canon EF-mount
Pentax 645 KAF2 bayonet
Material
Metal
Motor
Ultrasonic
Optical Formula | Elements
16 elements
17 elements
Optical Formula | Groups
11 groups
12 groups
Optical Formula | Special Glass
Four aspherical, one Super UD, one ED elements. Sub-wavelength structure, air sphere, super spectra, and fluorine coatings. groups
HD and Aero Bright coatings groups
Dimensions
Filter Diameter
82 mm / 3.23 in
Size | Diameter
108 mm / 4.25 in
99 mm / 3.90 in
Size | Length
132 mm / 5.20 in
152 mm / 5.98 in
Weight
1180 g / 41.70 oz
1470 g / 51.94 oz
Function
Angle Of View
126.1° Diagonal | 117.1° Horizontal | 95.0° Vertical (wide) ~ 84.1° Diagonal | 73.7° Horizontal | 53.1° 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
0.6
Focal Length
11 mm ~ 24 mm
28 mm ~ 45 mm
Focal Length (35mm Equivalent)
17.4 mm ~ 27.9 mm
Focus Type
Internal
Internal
Image Stabilization
No
Yes
Weather Resistance
Yes
Yes
Zoom Type
Internal zoom
Internal zoom
Performance
Max Magnification
0.16x
0.21x
Min Focus Distance
280 mm / 11.02 in
400 mm / 15.75 in
Production
Accessory
Lens hood included
Lens Hood: 38709 (supplied)
Debut
2015-02-06
2014-08-04
Reviews
Neofiliac score
43%
68%
Pros
- One of the widest FOV available on FF
- Compelling sharpness
- Internal zoom
- Weather-sealed
- Beautiful construction
- Superb image quality
- Optically stabilized
- Internal zoom
- Weather-sealed
- Solidly built
Cons
- Dark maximum aperture
- Large physical size
- On the heavy side
- Lacks front filter thread
- Dark maximum aperture
- Large and heavy
- Rather expensive
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