Compare Pentax-DA 11-18mm F2.8 vs Canon RF 15-30mm F4.5-6.3 vs Canon RF-S 18-45mm F4.5-6.3
Construction
Aperture Blades
7 blades
7 blades
Colors
Black
Black
Form Factor
Ultra Wide-Angle Zoom Lens
Ultra Wide-Angle Zoom Lens
Standard Zoom Lens
Image Size
APS-C
Full-Frame
APS-C
Lens Barrel
Distance scale
Distance scale
Lens Mount
Pentax K-mount
Canon RF-mount
Canon RF-mount
Motor
Stepper motor
Stepper motor
Optical Formula | Elements
13 elements
7 elements
Optical Formula | Groups
11 groups
7 groups
Optical Formula | Special Glass
Two ultra-low dispersion elements and one aspherical element. Uses Canon’s Super Spectra Coating (SSC). groups
Two aspherical elements groups
Dimensions
Filter Diameter
67 mm / 2.64 in
49 mm / 1.93 in
Size | Diameter
77 mm / 3.03 in
69 mm / 2.72 in
Size | Length
88 mm / 3.46 in
44 mm / 1.73 in
Weight
390 g / 13.78 oz
130 g / 4.59 oz
Function
Angle Of View
105.4° Diagonal | 95.0° Horizontal | 72.1° Vertical (wide) ~ 77.4° Diagonal | 67.4° Horizontal | 47.9° Vertical (tele)
110.6° Diagonal | 100.4° Horizontal | 77.3° Vertical (wide) ~ 71.6° Diagonal | 61.9° Horizontal | 43.6° Vertical (tele)
73.9° Diagonal | 64.0° Horizontal | 45.2° Vertical (wide) ~ 33.5° Diagonal | 28.1° Horizontal | 18.9° Vertical (tele)
Aperture
f/2.8
f/4.5–6.3 ~ f/22–32
f/4.5–6.3 ~ f/22
Autofocus
Yes
Yes
Yes
Crop Factor
1.5
1.6
Focal Length
11 mm ~ 18 mm
15 mm ~ 30 mm
18 mm ~ 45 mm
Focal Length (35mm Equivalent)
16.5 mm ~ 27.0 mm
28.8 mm ~ 72.0 mm
Focus Type
Internal
Image Stabilization
No
Yes
Yes (7 stops)
Weather Resistance
No
No
Zoom Type
External zoom
External zoom
External zoom
Performance
Max Magnification
0.16x
Min Focus Distance
130 mm / 5.12 in
200 mm / 7.87 in
Production
Accessory
Lens hood included
Lens hood included
Lens Hood: Canon EW-53 (sold separately)
Debut
2017-10-26
2022-07-12
2022-05-24
Reviews
Neofiliac score
40%
37%
19%
Pros
- Good build quality
- Good center resolution
- Affordable
- Interesting zoom range
- Stabilized
- Optically stabilized
- Short barrel
- Light in the hand
Cons
- Lacks front filter thread
- Expensive for an APS-C wide-angle zoom
- Dark maximum aperture
- External zoom without zoom lock
- Lacks weather sealing
- Low build quality
- Dark maximum aperture
- External zoom without zoom lock
- Lens hood not included
- Lacks weather sealing
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