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What is the crop factor of the Canon G12?

The Canon PowerShot G12 is equipped with a 1/1.7-inch sensor, whose diagonal measures 9.5mm. The sensor has a crop factor (or format factor, or focal length multiplier) of 4.6.

The crop factor is defined as the ratio of the 35mm full-frame film diagonal to the diagonal of a digital sensor. This number indicates how a lens behaves in relation to the size of the image sensor.

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Sensor size comparison with a film slide

With a crop factor of 4.6, the sensor in the Canon G12 is smaller than the receptor area of a 35mm film slide or negative. As a result, the lens that is attached to the Canon G12 will offer a narrower angle of view and provide deeper depth of field than a lens of similar focal length and aperture on a film camera. The equivalent focal length is obtained by multiplying the actual focal length of the lens with the crop factor. For example, a 11mm lens on the Canon G12 will provide the same angle of view and depth of field as a 50mm normal lens on a film camera (11mm * 4.6 = 50mm).

Canon G12 and Credit Card sensor measures
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Sensor specs and performance

The table below compares the sensor specs of the Canon G12 to those of several similar cameras. The reported DXO values are indicators of the sensor's imaging quality (higher is better), covering color depth (DXO Portrait), dynamic range (DXO Landscape), and high-ISO noise (DXO Sports). Larger sensor cameras tend to outperform cameras of the same generation that are equipped with a smaller imager. On the other hand, larger sensors are more expensive and require bigger and heavier lenses than smaller light receptors.

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Sensor Characteristics
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Canon G12 1/1.7 10.0 3648 2736720/24p20.411.216147
2.
 
Canon G15 1/1.7 12.0 4000 30001080/24p19.911.516546
3.
 
Canon G16 1/1.7 12.0 4000 30001080/60p21.011.723054
4.
 
Canon SX50 1/2.3 12.0 4000 30001080/24p20.311.217947
5.
 
Fujifilm X10 2/3 12.0 4000 30001080/30p20.511.324550
6.
 
Nikon P7800 1/1.7 12.0 4000 30001080/30p21.211.720054
7.
 
Olympus E-450 Four Thirds 10.0 3648 2736none21.510.551256
8.
 
Panasonic FZ150 1/2.3 12.0 4000 30001080/60p19.410.913240
9.
 
Panasonic G2 Four Thirds 12.0 4000 3000720/30p21.210.349353
10.
 
Panasonic G10 Four Thirds 12.0 4000 3000720/30p21.210.141152
11.
 
Panasonic LX5 1/1.7 10.0 3648 2736720/60p19.610.813241
Further information on the sensor in the Canon G12 and the camera's operation can be found in the camera manual.

In the United States, the G12 was initially launched in September 2010 at a price of $499.

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Camera to camera comparisons

If you would like to see a side-by-side review with another camera, just make a corresponding selection in the search boxes below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications Summary
    Camera Model Canon G12
    Camera Type Fixed lens compact camera
    Camera Lens 28-140mm f/2.8-4.5
    Launch Date September 2010
    Launch Price USD 499
    Sensor Specs
    Sensor Technology CCD
    Sensor Format 1/1.7" Sensor
    Sensor Size 7.6 x 5.7 mm
    Sensor Area 43 mm2
    Sensor Diagonal 9.5 mm
    Crop Factor 4.6x
    Sensor Resolution 10 Megapixels
    Image Resolution 3 648 x 2 736 pixels
    Pixel Pitch 2.07 μm
    Pixel Density 23.04 MP/cm2
    Moiré control Anti-Alias filter
    Movie Capability 720/24p Video
    ISO Setting 80 - 3 200 ISO
    ISO Boost 80 - 12 800 ISO
    Image Processor DIGIC 4
    DXO Sensor Quality (score) 47
    DXO Color Depth (bits) 20.4
    DXO Dynamic Range (EV) 11.2
    DXO Low Light (ISO) 161
    Screen Specs
    Viewfinder Type Optical viewfinder
    Top-Level Screen no Top Display
    LCD Framing Live View
    LCD Size 2.8 inch
    LCD Resolution 461k dots
    LCD Attachment Swivel screen
    V-logging Friendliness No front-flip
    Touch Input No touchscreen
    Shooting Specs
    Focus System Contrast-detect AF
    Manual Focusing Aidno Peaking Feature
    Maximum Shutter Speed 1/4000s
    Continuous Shooting 1.1 shutter flaps/s
    Silent Shootingno E-Shutter
    Time Lapse Photographyno Intervalometer
    Fill Flash Built-in Flash
    Storage Medium SDXC cards
    Single or Dual Card Slots Single card slot
    UHS card support no
    Connectivity Specs
    External Flash Hotshoe
    USB Connector USB 2.0
    HDMI Port mini HDMI
    Wifi Support no Wifi
    Body Specs
    Battery Type Canon NB-7L power pack
    Battery Life (CIPA)370 shots per charge
    Body Dimensions 112 x 76 x 48 mm
    (4.4 x 3.0 x 1.9 in)
    Camera Weight 401 g (14.1 oz)

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