| How
colour profiling works - in a nutshell |
Colour profiling may sound tricky - but it's
actually very simple. For each device that uses colour - your printer,
monitor, scanner or camera, the actual way the colour is seen or
represented on the device may differ from how the manufacturer intended,
and may differ again from our devices used in your workflow.
We can solve this problem by using a colour
profiling system. A colour profile is simply a file that your computer
uses in association with a particular device. The file tells the
computer how to translate what the device inputs or outputs in order
to give the best colour match.
Profiles work as follows:
| For
input devices (scanners, cameras etc.) |
- Your input device supplies a file to the
computer representing the colours that it believes it has
correctly scanned.
- Your computer uses a colour profile that
you have previously set up to alter this file. The colour profile
will reflect how your camera or scanner shows colour and will
correct it accordingly. So, for example, if your scanner always
shows reds too bright and blues too dark, the profile contains
instructions telling the computer to alter the values in the scanned
or photographed file so that it shows normal reds and blues.
- Your computer then passes the amended input
file to the application you are using for processing as normal.
| For
output devices (monitors, printers, etc.) |
The process is similar,
but in reverse:
- Your application software presents a file
that it wishes to display or print.
- Your computer takes this file and uses the
colour profile for your monitor or printer to alter the file reflecting
the way your monitor or printer displays things and corrects them
accordingly. (In the case of printers, you will have set up
a different output profile for each type of paper you use - recognising
the fact that different paper types absorb and reflect ink in
different ways.)
- Your computer then passes the amended output
file to the output device for printing or display.
>>
Doing it
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