Hi! On Sun, Jan 13, 2013 at 9:54 PM, Tim Marston <[email protected]> wrote:
> OK, thanks. That is what I thought. > > The calibrated display I have was calibrated with a colorhug > (http://www.hughsie.com/), so the colour profile was created > specifically for the display. > > Sorry if this seems like a stupid question, but I just want to make sure > I understand the situation. Are you saying that I should set the > display colourspace to sRGB for the calibrated display as well? And let > the system's colour profile correct it, as usual? > The system profile will not be applied if you use sRGB - then it uses "default" values. Let me explain. When you computer sends out information to your monitor "display a pixel value of 0,0,255", it will display a green color. However WHICH exact green color is displayed will be different for each monitor, since a computer isn't able to say in which colorspace it is. If you could say "Display color 0,0,255 in colorspace sRGB" that would give you an indication of an exact color that should be displayed, however that is not how things work, and that is what color profiles do. So when the "Display color 0,0,255 in colorspace sRGB" is given to the profile, it may transform it to "display color 1,3,240 on the monitor" because what the monitor displays is what corresponds to 0,0,255 in sRGB. So, in theory, if you do have a monitor profile, use that, and colors should be more precise. However, since sRGB is assumed "standard" for many monitors, they are calibrated to display that well. However, you can easily find monitors that can switch to AdobeRGB as standard input - but if you display sRGB images on these monitors without transforming them to AdobeRGB, they will look overly saturated for instance. Use your best judgement - you may find out things like the monitor profile is best for displaying skin tones, whereas sRGB gives you a better impression of light levels, or the other way around or something completely different. Just be aware that color profiling isn't an exact science and as all photographers will tell you, most monitors suck and display their images completely wrong. The best you can do is get an impression on how your monitors differ from other displays, so you are aware of that when you do your adjustments. Also note that people get used to their displays, so they automatically compensate for their problems when looking at images. Regards, Klaus Post http://www.klauspost.com
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