32-bit images can store approx. 4.3 Billion color / greyscale values
For reference, the human eye is perceived to register about 10 million colors.
32-bit images are used for applications such as:
- Photography – to provide extra color / luminance range in the image*
- CGI Rendering (Computer Rendering) via a process called Image Based Lighting (IBL)
* In reality, to actually appreciate this information as a print or via screen, the image is often ‘tone-mapped’
To understand how the Spheron system captures a HDR image, read more here: