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

The Canon EOS-1D Mark II is equipped with an APS-H sensor, whose diagonal measures 34.5mm. 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 II 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 II 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 II 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 II 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 II	APS-H	8.2	3504	2336	none	22.3	11.1	1003	66
2.		Canon 5DS	Full Frame	50.3	8688	5792	1080/30p	24.7	12.4	2381	87
3.		Canon 5DS R	Full Frame	50.3	8688	5792	1080/30p	24.6	12.4	2308	86
4.		Canon 1D Mark IV	APS-H	16.0	4896	3264	1080/30p	22.8	12.0	1320	74
5.		Canon 1D Mark III	APS-H	10.1	3888	2592	none	22.7	11.7	1078	71
6.		Canon 1Ds Mark III	Full Frame	21.0	5616	3744	none	24.0	12.0	1663	80
7.		Canon 1D Mark II N	APS-H	8.2	3504	2336	none	22.3	11.2	975	66
8.		Canon 5D	Full Frame	12.7	4368	2912	none	22.9	11.1	1368	71
9.		Canon 1Ds Mark II	Full Frame	16.6	4992	3328	none	23.3	11.3	1480	74
10.		Canon 1Ds	Full Frame	11.0	4064	2704	none	21.8	11.0	954	63
11.		Canon 1D	APS-H	4.1	2496	1662	none	..	..	..	..

In the United States, the 1D Mark II was initially launched in January 2004 at a price of $4,499.

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Camera to camera comparisons

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