What is the crop factor of the Olympus E-5?

The Olympus E-5 is equipped with a Four Thirds sensor, whose diagonal measures 21.6mm. The sensor has a crop factor (or format factor, or focal length multiplier) of 2.0.

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 2.0, the sensor in the Olympus E-5 is smaller than the receptor area of a 35mm film slide or negative. As a result, a lens that is attached to the Olympus E-5 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 25mm lens on the Olympus E-5 will provide the same angle of view and depth of field as a 50mm normal lens on a film camera (25mm * 2.0 = 50mm).

Sensor specs and performance

The table below compares the sensor specs of the Olympus E-5 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.		Olympus E-5	Four Thirds	12.2	4032	3024	720/30p	21.6	10.5	519	56
2.		Canon 60D	APS-C	17.9	5184	3456	1080/30p	22.2	11.5	813	66
3.		Olympus E-3	Four Thirds	10.0	3648	2736	none	21.6	10.5	571	56
4.		Olympus E-450	Four Thirds	10.0	3648	2736	none	21.5	10.5	512	56
5.		Olympus E-600	Four Thirds	12.2	4032	3024	none	21.5	10.3	541	55
6.		Olympus E-620	Four Thirds	12.2	4032	3024	none	21.3	10.3	536	55
7.		Olympus E-P3	Four Thirds	12.2	4032	3024	1080/60i	20.8	10.1	536	51
8.		Olympus E-PL2	Four Thirds	12.2	4032	3024	720/30p	21.4	10.2	573	55
9.		Olympus E-PL3	Four Thirds	12.2	4032	3024	1080/60i	20.9	10.3	499	52
10.		Olympus E-PM1	Four Thirds	12.2	4032	3024	1080/60i	21.0	10.3	499	52
11.		Sony A77	APS-C	24.0	6000	4000	1080/60p	24.0	13.2	801	78

In the United States, the E-5 was initially launched in September 2010 at a price of $1,699.

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Camera to camera comparisons

In case you are interested in seeing how this camera compares to another one, just use the search menu below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

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