wallPen E2 - Page 92

wallPen E2 | User Manual
92
Color Management
The RGB Color Space
A color space contains all colors that can be represented with a specific technology.
RGB stands for the three basic colors red, green and blue, which make up the RGB
color space. By using the appropriate mixing ratios, they result in a total of around 16.8
million color nuances. Red, green and blue are the physical basic colors, which is why
every representation in the digital realm is based on them - in other words: Every
image that is displayed on a screen. This includes, for example, photos taken with a
digital camera.
RGB are colors of light, the perception
of color comes from the mixing of
light. This is why we speak here of an
"additive color model". The more color
is used, the brighter the image
becomes. If all three basic colors are
used 100 %, the result is white.
So if we take a look at the RGB color
space, all colors within the black
triangle can be displayed, all colors
outside not. So it is to be recognized
clearly that the possibilities for the
representation of colors get limited.
Not all colors can be displayed on a
computer monitor as they occur in
nature, and every photo inevitably
becomes a kind of compromise. If a
hue (for example a certain shade of
green) lies outside the triangle, it is
"shifted" in such a way that it is at least
represented by a similar shade of
green that comes as close as possible
to the desired green. However, in
practice many color tones that are
displayed are only be close to the
target and the image becomes a
compromise!