What is the crop factor of the Sony RX1R III?

The Sony Cyber-shot DSC-RX1R III is equipped with a full frame sensor, whose diagonal measures 42.9mm. The sensor has a crop factor (or format factor, or focal length multiplier) of 1.0.

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 1.0, the sensor in the Sony RX1R III has a similar size as a 35mm film slide or negative. As a result, the lens that is attached to the Sony RX1R III will offer the same angle of view and provide the same depth of field as a lens of the same focal length and aperture on a film camera.

Sensor specs and performance

The table below compares the sensor specs of the Sony RX1R III 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.		Sony RX1R III	Full Frame	60.2	9504	6336	4K/30p	25.4	14.9	3417	97
2.		Fujifilm GFX 100RF	Medium Format	101.8	11648	8736	4K/30p	25.9	15.1	3805	101
3.		Fujifilm X100V	APS-C	26.0	6240	4160	4K/30p	24.2	13.6	1996	84
4.		Fujifilm X100VI	APS-C	39.8	7728	5152	6.2K/30p	24.3	14.1	2397	86
5.		Leica Q3	Full Frame	60.3	9528	6328	8K/30p	25.4	14.7	3216	96
6.		Nikon Z50 II	APS-C	20.7	5568	3712	4K/60p	24.3	14.1	2467	86
7.		Pentax WG-8	1/2.3	20.2	5184	3888	4K/30p	20.9	12.8	1626	54
8.		Pentax WG-1000	1/2.3	15.9	4608	3456	1080/30p	20.9	12.8	1626	54
9.		Sigma fp L	Full Frame	60.2	9520	6328	4K/30p	25.3	14.4	3001	96
10.		Sony A7C R	Full Frame	60.2	9504	6336	4K/60p	25.4	14.7	3227	96
11.		Sony RX1R II	Full Frame	42.2	7952	5304	1080/60p	25.8	13.9	3204	97
Note: DXO values in italics represent estimates based on sensor size and age.

In the United States, the RX1R III was initially launched in July 2025 at a price of $5,099.

Check RX1R III price at
amazon.com

Camera to camera comparisons

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