What is the crop factor of the Pentax K-500?

The Pentax K-500 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 Pentax K-500 is smaller than the receptor area of a 35mm film slide or negative. As a result, a lens that is attached to the Pentax K-500 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 Pentax K-500 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 Pentax K-500 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.		Pentax K-500	APS-C	16.1	4928	3264	1080/30p	23.7	13.1	1087	79
2.		Leica X Vario	APS-C	16.1	4928	3272	1080/30p	23.4	12.7	1320	78
3.		Olympus E-PM2	Four Thirds	15.9	4608	3456	1080/30p	22.7	12.2	932	72
4.		Pentax K-70	APS-C	24.0	6000	4000	1080/60i	23.8	13.1	1639	80
5.		Pentax K-S1	APS-C	20.0	5472	3648	1080/30p	23.5	13.0	1061	78
6.		Pentax K-50	APS-C	16.1	4928	3264	1080/30p	23.7	13.0	1120	79
7.		Pentax K-3	APS-C	24.1	6016	4000	1080/60i	23.7	13.4	1216	80
8.		Pentax K-30	APS-C	16.1	4928	3264	1080/30p	23.7	13.0	1129	79
9.		Pentax K-5 II	APS-C	16.1	4928	3264	1080/25p	23.8	14.1	1235	82
10.		Pentax K-5	APS-C	16.1	4928	3264	1080/25p	23.7	14.1	1162	82
11.		Sony A58	APS-C	19.8	5456	3632	1080/60i	23.3	12.5	753	74
Note: DXO values in italics represent estimates based on sensor size and age.

In the United States, the K-500 was initially launched in June 2013 at a price of $549.

Check K-500 offers at
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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 make a corresponding selection in the search boxes 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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