What exactly do graphic developers of photography companies do?

My understanding of the film making machine is that I am familiar with the color expansion software.

I have seen the 10 key above, which is four keys of four colors of cmyk (cyan, magenta, yellow and black), then the bright and dark keys, and then the+-keys to control all the strengthening and weakening respectively, and something similar to the Enter key.

One-handed operation should be very skilled, because there are many tablets every day, and it is not an exaggeration to say that fingers are flying.

Boring,

There are also some large printing companies that use ps to adjust colors in computers and send them directly to printers, so printers are quite easy. Just look at the printer. But there is generally no designated person.