Colour depth is often referred to as being X bits. What does this mean and how does it effect a photograph? What scale is used, i.e. is it linear, exponential, logarithmic, etc.?
Which is part of the camera that is responsible for color depth of the images?Is it the property of the image sensor or the image processor of camera? And why do it differ from cameras?How much effect ...
Likely this will be the same as the color depth in bits per channel. For digital cameras it can be 8bit or 12bit and sometimes as high as 14bit. What is it for the IPhone 5?