[argyllcms] Re: absolute new to calibration/profiling in total confusion. (long post)

On 2008 Jun 13, at 2:41 AM, Andrea Barbieri wrote:
The profile i'm searching to do is for photo editing, that for now have not to be printed but viewed on web. 
so i want calibrate the f17 as much close as possible to srgb..
And the Eizo, the best calibration in absolute possible, for the lcd characteristics and for photo editing. 

First, start by reading this:

    http://www.argyllcms.com/doc8/monitorcontrols.html

It helped me a great deal.
As an only video workflow, i suppose the best match as to be 6500°K gamma 2.2 as "standard" the colorimeter is an i1 display lt (old one gretag..)
The white point you calibrate to should match your desired white point, so 6500 K is the correct choice in your case.
The gamma only affects the way that programs which DON'T understand ICC profiles display images. If you'll be working with ICC-aware editing software, choose the gamma of your display's native response (dispcal -R). If your software is not ICC-aware, then pick whatever your desired target gamma is (usually 2.2 for video and 1.8 for print). 


 question about.. -T -t options... white daylight  or white blackbody?
Unless you have a good reason otherwise, it's best to stick with daylight as opposed to black body. The spectrum of daylight is very close to black body radiation, but they're not the same. Our visual systems work best with daylight, it's readily available, and it's the standard on which most color theory is based. 


next step  targen -v3 -d3 -e20 -f2000 EIZO_displayA

i choose f2000 as a good number of patches for the Eizo...
the -e 20 (to test various whites ) is too much?


It won't hurt anything, but it's probably overkill.


others option usefull?  the others seems to me targeted on printers..
For displays when creating profiles with lots of patches, I like to use -g to add in neutral patches, since (thanks to dispcal) R=G=B should be very close to neutral. I figure it should help get the neutral axis spot-on. I might be deceiving myself, though....
i excuse me, don't understand the 90% of other option there's others usefull?
Most of the rest of the options won't apply to displays for various reasons. I wouldn't lose sleep over it.
The only other thing I'd suggest is to open a Grainger Rainbow in Photoshop and assign it your newly-created display profile. If you see objectionable banding, try creating a profile with several thousand patches, and let dispread run overnight. The nice thing about profiling displays is that you can create profiles with insane patch counts at no extra cost or effort, so long as you can let the computer do its thing overnight. 

Cheers,

b&

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