On: Wed, 22 Jan 2003 John Thompson wrote: > I wonder, if our perceptions of colours are various, and different from > person to person in any case (one in ten being distinctly abnormal,(men that > is, women much less abnormal> according to Dr Spencer) where does the > profiling get us, except that we are all looking at the same numbers? > > Or is that the point?
Completely and irrefutably and you've got it in one. A monitor properly calibrated will show an ideal approximation of the contents of a digital picture file. No monitor in current production will show all the colours in the file as visible to the eye, but most of what is necessary. So in fact, the monitor is 'colour blind' in the same way each and everyone of us (to some degree) are also 'colour blind'. Equally, a profiled printer will show an ideal approximation of an RGB file's content - as displayed on screen - using ink on paper. What is on the screen, will be the same as in the print. Both screen and printer are independently profiled/calibrated from each other to represent the same numbers contained within the picture file. The numbers in the picture file and the monitor/printer profiles are in essence, both the same. One set of numbers represent the picture file as transmitted RGB light through a CRT/LCD, the other set represents the picture file as light reflected from CMYK ink sprayed onto paper. Once colour management is in place, it means that you can trust your own perception of colour - whoever or whatever you are - as your own individual colour perception is utterly unique. Hope this helps <G> William Curwen www.william.ws (update imminent:) =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
