DCMI Memory for a camera in STM32F756

#define CAMERA_FRAME_BUFFER     0xC0260000

#define CONVERTED_FRAME_BUFFER 0xC0390000

I have seen a example application in the downloaded Bundle from the ST Site.

Applications/Camera Example:

In this application CAMERA is initialised with CAMERA_FRAME_BUFFER and when Capture the frame with capture command the data is retrieved from CONVERTED_FRAME_BUFFER.

I just want to know the logic behind this.

Logically the data should be available on CAMERA_FRAME_BUFFER, but why the application is retrieving from CONVERTED_FRAME_BUFFER ?