What is the crop factor of the Canon 1D Mark IV?

The Canon EOS-1D Mark IV is equipped with an APS-H sensor, whose diagonal measures 33.5mm. The sensor has a crop factor (or format factor, or focal length multiplier) of 1.3.

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 1.3, the sensor in the Canon 1D Mark IV is smaller than the receptor area of a 35mm film slide or negative. As a result, a lens that is attached to the Canon 1D Mark IV 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 38mm lens on the Canon 1D Mark IV will provide the same angle of view and depth of field as a 50mm normal lens on a film camera (38mm * 1.3 = 50mm).

Sensor specs and performance

The table below compares the sensor specs of the Canon 1D Mark IV 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 1D Mark IV	APS-H	16.0	4896	3264	1080/30p	22.8	12.0	1320	74
2.		Canon 1D X Mark II	Full Frame	20.0	5472	3648	4K/60p	24.1	13.5	3207	88
3.		Canon 1D X	Full Frame	17.9	5184	3456	1080/30p	23.8	11.8	2786	82
4.		Canon 60D	APS-C	17.9	5184	3456	1080/30p	22.2	11.5	813	66
5.		Canon 7D	APS-C	17.9	5184	3456	1080/30p	22.0	11.7	854	66
6.		Canon 5D Mark II	Full Frame	21.0	5616	3744	1080/30p	23.7	11.9	1815	79
7.		Canon 1D Mark III	APS-H	10.1	3888	2592	none	22.7	11.7	1078	71
8.		Canon 1D Mark II	APS-H	8.2	3504	2336	none	22.3	11.1	1003	66
9.		Canon 1Ds Mark II	Full Frame	16.6	4992	3328	none	23.3	11.3	1480	74
10.		Nikon D4	Full Frame	16.2	4928	3280	1080/30p	24.7	13.1	2965	89
11.		Nikon D3S	Full Frame	12.1	4256	2832	720/24p	23.5	12.0	3253	82

In the United States, the 1D Mark IV was initially launched in October 2009 at a price of $4,999.

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Camera to camera comparisons

In case you would like to check on the differences and similarities with other camera models, just use the search menu below. An an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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