For the longest time, comparing image quality between point-and-shoot cameras and full-frame cameras, or even APS-C format cameras, was a conversation you could have start to finish during the course of an elevator ride. Point-and-shoot cameras were convenient, but the detail and dynamic range of their smaller sensors never measured up to the detail and dynamic range you get from larger sensors. And then one day Sony introduced a new 1" format CMOS sensor, and BOOM! People started having second thoughts about slinging heavy camera bags over their shoulders.
Not Too Big, Not Too Small—The Perfect Sensor Size
The size of Sony’s 20.1MP 1" BSI CMOS sensor, which has since been licensed for use in cameras produced by other camera manufacturers, is situated in a sweet spot among sensor sizes. Compared to a full-frame sensor, 1" sensors have a 2.7x crop factor, which is smaller than MFT (2x) and APS-C (1.5x or 1.6x) camera sensors. Conversely, 1" sensors are larger than the tiny 1/1.7" (4.6x) and 1/2.5" (6x) sensors found in conventional point-and-shoot cameras.
The physical size of the 1" sensor is large enough to suppress much of the noise that traditionally plagues photographs taken with point-and-shoot cameras. The dynamic range of 1" sensors is also notably greater than smaller point-and-shoot sensors, which results in greater detail in the highlights and shadows. In the world of point-and-shoot cameras, this has long been an issue. Sony’s 20.1MP 1" BSI CMOS sensor puts much of this to rest.
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