What is the crop factor of the Canon S120?

The Canon PowerShot S120 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 4.5.

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.

Sensor size comparison with a film slide

With a crop factor of 4.5, the sensor in the Canon S120 is smaller than the receptor area of a 35mm film slide or negative. As a result, the lens that is attached to the Canon S120 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 S120 will provide the same angle of view and depth of field as a 50mm normal lens on a film camera (11mm * 4.5 = 50mm).

Sensor specs and performance

The table below compares the sensor specs of the Canon S120 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.

Sensor Characteristics

#		Camera Model	Sensor Class	Resolution (MP)	Horiz. Pixels	Vert. Pixels	Video Format	DXO Portrait	DXO Landscape	DXO Sports	DXO Overall
1.		Canon S120	1/1.7	12.0	4000	3000	1080/60p	21.3	11.9	246	56
2.		Canon G9 X Mark II	1-inch	20.0	5472	3648	1080/60p	21.9	12.5	522	65
3.		Canon G9 X	1-inch	20.0	5472	3648	1080/60p	21.5	12.3	495	63
4.		Canon G1 X Mark II	1.5-inch	13.0	4160	3120	1080/30p	21.5	10.8	581	58
5.		Canon G16	1/1.7	12.0	4000	3000	1080/60p	21.0	11.7	230	54
6.		Canon G1 X	1.5-inch	14.2	4352	3264	1080/24p	21.7	10.8	644	60
7.		Canon G15	1/1.7	12.0	4000	3000	1080/24p	19.9	11.5	165	46
8.		Canon SX50	1/2.3	12.0	4000	3000	1080/24p	20.3	11.2	179	47
9.		Nikon P7800	1/1.7	12.0	4000	3000	1080/30p	21.2	11.7	200	54
10.		Panasonic LF1	1/1.7	12.0	4000	3000	1080/60i	20.8	11.6	211	52
11.		Panasonic LX7	1/1.7	10.0	3648	2736	1080/60p	20.7	11.7	147	50

In the United States, the S120 was initially launched in August 2013 at a price of $449.

Check S120 offers at
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Camera to camera comparisons

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