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Doug Kerr
Guest
Although some of you were kind enought to explain this to me before, I can't get all my thoughts to come togather, so I am going to have to ask for a refresher on the role of monitor calibration and monitor profiles.
As I understand it:
A. When we calibrate a monitor, we arrange for values to be written into the video board's LUT so that the display chain (driver+video board+monitor proper) will exhibit a certain standardized response at its "input". In effect, it arranges for the display chain to follow a certain color space definition.
B. A profile for a certain monitor is a set of parameters, held in a standard format file, that can be consulted by a profile-aware application (e.g. Photoshop) to define how it should transform an image it is holding from the standard intermediate color space (PCS - the Profile Connection Space) to the color space exhibited by the display chain (at its input).
Now, my questions:
1. Are the above two statements essentially true? [If not, then the next question may not really work.]
2. What is the "standard color space at the display chain input" (as discussed in A, above) that we try to put into effect by the calibration process (and the attendant populating of the display LUT)? Is it in fact a standard, or is it just an arbitrary color space that the maker of the calibrating/profiling package thinks would be well-behaved?
Thanks.
As I understand it:
A. When we calibrate a monitor, we arrange for values to be written into the video board's LUT so that the display chain (driver+video board+monitor proper) will exhibit a certain standardized response at its "input". In effect, it arranges for the display chain to follow a certain color space definition.
B. A profile for a certain monitor is a set of parameters, held in a standard format file, that can be consulted by a profile-aware application (e.g. Photoshop) to define how it should transform an image it is holding from the standard intermediate color space (PCS - the Profile Connection Space) to the color space exhibited by the display chain (at its input).
Now, my questions:
1. Are the above two statements essentially true? [If not, then the next question may not really work.]
2. What is the "standard color space at the display chain input" (as discussed in A, above) that we try to put into effect by the calibration process (and the attendant populating of the display LUT)? Is it in fact a standard, or is it just an arbitrary color space that the maker of the calibrating/profiling package thinks would be well-behaved?
Thanks.
