What is the crop factor of the Nikon D7100?

The Nikon D7100 is equipped with an APS-C sensor, whose diagonal measures 28.2mm. The sensor has a crop factor (or format factor, or focal length multiplier) of 1.5.

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 1.5, the sensor in the Nikon D7100 is smaller than the receptor area of a 35mm film slide or negative. As a result, a lens that is attached to the Nikon D7100 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 33mm lens on the Nikon D7100 will provide the same angle of view and depth of field as a 50mm normal lens on a film camera (33mm * 1.5 = 50mm).

Sensor specs and performance

The table below compares the sensor specs of the Nikon D7100 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.		Nikon D7100	APS-C	24.0	6000	4000	1080/60p	24.2	13.7	1256	83
2.		Canon 70D	APS-C	20.0	5472	3648	1080/30p	22.5	11.6	926	68
3.		Nikon D7500	APS-C	20.7	5568	3712	4K/30p	24.3	14.0	1483	86
4.		Nikon D500	APS-C	20.7	5568	3712	4K/30p	24.0	14.0	1324	83
5.		Nikon D7200	APS-C	24.0	6000	4000	1080/60p	24.5	14.6	1333	87
6.		Nikon D750	Full Frame	24.2	6016	4016	1080/60p	24.8	14.5	2956	93
7.		Nikon D3300	APS-C	24.0	6000	4000	1080/60p	24.3	12.8	1385	82
8.		Nikon D610	Full Frame	24.2	6016	4016	1080/30p	25.1	14.4	2925	94
9.		Nikon D600	Full Frame	24.2	6016	4016	1080/30p	25.1	14.2	2980	94
10.		Nikon D7000	APS-C	16.1	4928	3264	1080/24p	23.5	13.9	1167	80
11.		Sony RX10	1-inch	20.0	5472	3648	1080/60p	22.9	12.6	474	69

In the United States, the D7100 was initially launched in February 2013 at a price of $1,199.

Check D7100 offers at
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Camera to camera comparisons

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