Compare Sigma 17-70mm F2.8-4 DC Macro vs Canon RF-S 18-45mm F4.5-6.3
Construction
Aperture Blades
7 blades, rounded
7 blades
Colors
Black
Form Factor
Standard Zoom Lens
Standard Zoom Lens
Image Size
APS-C
APS-C
Lens Barrel
Distance scale
Lens Mount
Canon EF-mount, Nikon F-mount, Pentax K-mount, Sigma SA-mount, Sony A-mount
Canon RF-mount
Material
Plastic barrel, metal mount
Motor
Micro-type ultrasonic
Stepper motor
Optical Formula | Elements
16 elements
7 elements
Optical Formula | Groups
14 groups
7 groups
Optical Formula | Special Glass
2 FLD ("F" Low Dispersion) glass elements, 1 SLD (Special Low Dispersion) glass element, 3 aspherical glass lenses including double sided aspherical lens groups
Two aspherical elements groups
Dimensions
Filter Diameter
72 mm / 2.83 in
49 mm / 1.93 in
Size | Diameter
79 mm / 3.11 in
69 mm / 2.72 in
Size | Length
82 mm / 3.23 in
44 mm / 1.73 in
Weight
465 g / 16.43 oz
130 g / 4.59 oz
Function
Angle Of View
80.7° Diagonal | 70.4° Horizontal | 50.4° Vertical (wide) ~ 23.3° Diagonal | 19.5° Horizontal | 13.0° Vertical (tele)
73.9° Diagonal | 64.0° Horizontal | 45.2° Vertical (wide) ~ 33.5° Diagonal | 28.1° Horizontal | 18.9° Vertical (tele)
Aperture
f/2.8–4 ~ f/22
f/4.5–6.3 ~ f/22
Autofocus
Yes
Yes
Crop Factor
1.5
1.6
Focal Length
17 mm ~ 70 mm
18 mm ~ 45 mm
Focal Length (35mm Equivalent)
25.5 mm ~ 105.0 mm
28.8 mm ~ 72.0 mm
Focus Type
Internal
Internal
Image Stabilization
Yes
Yes (7 stops)
Weather Resistance
No
Zoom Type
External zoom
External zoom
Performance
Max Magnification
0.36x
0.16x
Min Focus Distance
220 mm / 8.66 in
200 mm / 7.87 in
Production
Accessory
Lens Hood: LH780-03 (supplied)
Lens Hood: Canon EW-53 (sold separately)
Debut
2012-09-17
2022-05-24
Made In
Japan
Reviews
Neofiliac score
65%
19%
Pros
- Optically stabilized
- Rather good resolution
- Optically stabilized
- Short barrel
- Light in the hand
Cons
- External zoom without zoom lock
- Merely 0.36x maximum magnification despite named "Macro"
- Dark maximum aperture
- External zoom without zoom lock
- Lens hood not included
- Lacks weather sealing
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