[ELI5] Why can’t we access the whole colour gamut they show on the graph? And only portions like sRGB?

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So, I’ve recently started to learn about Display technologies, and I’m having countless questions.
How are able to use 8-bit per channel displays and not run out of system memory?
There must some amount of compression right? Where can I download a true 24 bit image with 1 bit colour occupying 1 bit memory?

In: Technology

3 Answers

Anonymous 0 Comments

8 bit per channel means 3 bytes per pixel or 3 megabytes per 1024×1024 uncompressed image (or 6 megabytes per 1920×1080 fullscreen image) which isn’t that much. Bmp files usually store data like that (some lossless compression may be possible but not always used). Jpg/png/gif use compression, all video is even more compressed.

Also, there are HDR image formats such as .tiff which use even more bits per channel.

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