Post by sweetleaf on Feb 16, 2004 11:02:54 GMT -5
Hi, well my first post outside of saying hello 
Colours...Waffling on and on about stuff activated
CMYK - RGB
RGB (red, green, blue) are based on the same thing as red -blue -yellow, whats known as addative colours, as in you may have come across the colour wheel which is used in science classes to explaint hat all colours are made from white light, which then splits and you can see the various colours light wave lengths, seeing the white split up into all the colours of the rainbow. Mostly RGB is used to produce up to 256 colours with each one, so the total number of colours achievable has been 256*256*256 or (gets out desktop calculator) 16,777,216 colours, you'll probably hear most people in computerland refer to it by rounding up - 16.8 million colours, this has been commonly refered to as 24 bit colour on your desktop colour depth...
CMYK (Cyan, Magenta, Yellow, Black) are the opposite of RGB, in that they are subtractive, that is they achieve black when all combined, even without the black. These are the colours traditionally used in the Lithographic printing industry, to produce magazines, books, newspapers etc. The addition of the black is because the colours on their own dont actually make true black, or can, but it takes such a delicate balance, so black was used instead as a 'quick fix' these days there are additional colours used and you can see Hexachrome (6 colours) which use an additional 2 to achieve the more difficult colours, again its a 'quick fix' rather than spending 100's of sheets of paper trying to get exactly the right gold (for example) as well as the correct levels of light and dark etc. its all to achieve 'truer' colours in the areas which matter more.
CMYK is a little more difficult to achieve the kind of colour you want of course, because you have 4 different colours to mess with rather than 3. I personally prefer to mess with RGB when I want to achieve a particular base colour, then just mess with sliders until I get more of what I need.
You can tell I've done some 'learning' cant you? ;D College....produced some of the most boring times of my life...
Colours...Waffling on and on about stuff activated
CMYK - RGB
RGB (red, green, blue) are based on the same thing as red -blue -yellow, whats known as addative colours, as in you may have come across the colour wheel which is used in science classes to explaint hat all colours are made from white light, which then splits and you can see the various colours light wave lengths, seeing the white split up into all the colours of the rainbow. Mostly RGB is used to produce up to 256 colours with each one, so the total number of colours achievable has been 256*256*256 or (gets out desktop calculator) 16,777,216 colours, you'll probably hear most people in computerland refer to it by rounding up - 16.8 million colours, this has been commonly refered to as 24 bit colour on your desktop colour depth...
CMYK (Cyan, Magenta, Yellow, Black) are the opposite of RGB, in that they are subtractive, that is they achieve black when all combined, even without the black. These are the colours traditionally used in the Lithographic printing industry, to produce magazines, books, newspapers etc. The addition of the black is because the colours on their own dont actually make true black, or can, but it takes such a delicate balance, so black was used instead as a 'quick fix' these days there are additional colours used and you can see Hexachrome (6 colours) which use an additional 2 to achieve the more difficult colours, again its a 'quick fix' rather than spending 100's of sheets of paper trying to get exactly the right gold (for example) as well as the correct levels of light and dark etc. its all to achieve 'truer' colours in the areas which matter more.
CMYK is a little more difficult to achieve the kind of colour you want of course, because you have 4 different colours to mess with rather than 3. I personally prefer to mess with RGB when I want to achieve a particular base colour, then just mess with sliders until I get more of what I need.
You can tell I've done some 'learning' cant you? ;D College....produced some of the most boring times of my life...
