BIT DEPTH
The bit depth is how many different colours are available in an images' colour palette through the use of 'bits', these bits specify each of the different colours. Although the image may not use all the colours found in these specific bits, it helps to create a specific colour if it is needed and with a high amount of accuracy.A colour pixel is always made up of three colours which are red, blue and green. These three different colours can have various different colour values depending on how the colour is specified, another name given to the different colours is bits per channel. The bits per pixel or bpp, is representative of the total sum of the colours within the specific bits.
The colour chart above showcases the different colour amounts depending on the amount of bits. The human eye is only capable of distinguishing 10 million different colours, so having an image that is 24 or more bits is excessive.
A 16 bit image is known as a high colour image, there are 16 different colour level variations available for the 3 colours red, blue and green.
A 24 bit image is known as a true colour image, as the total amount of colours create a perfect image using all the available shade variations of red, blue and green.
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