Re: Need to reset the Apple 23" Cinema HD Display brightness values back to factory defaults
Re: Need to reset the Apple 23" Cinema HD Display brightness values back to factory defaults
- Subject: Re: Need to reset the Apple 23" Cinema HD Display brightness values back to factory defaults
- From: Marco Ugolini <email@hidden>
- Date: Thu, 2 Mar 2006 17:25:22 -0800 (GMT-08:00)
Hi Fairfax.
I may be misunderstanding your question, but why do you want to reset the ACD's brightness values? If you are using EyeOne Match with your EyeOne Display 2, all you need to do in order to calibrate your monitor is to adjust the brightness via the "Displays" panel in System Preferences until you reach your desired luminance.
I don't see a compelling reason to go back to "factory defaults", since (a) I doubt that there are any meaningful ones, or that they would do you any good even if there were, and (b) your calibration/profiling software already takes care of removing any vcgt curves from your video card before starting the caibration/profiling process. That is the only "default" that matters: to start with a display whose video card signal is not at all altered by custom curves, so that the new curves created by your profiling software will have a chance to be properly created and applied, without interferences.
As for the luminance values, I believe that, based on my experience, 120 to 140 cd/m2 are good figures for LCD displays in environments lit by lighting of average intensity. In brighter environments you can go as high as 160 cd/m2, whereas in dim ones it will do to set the display anywhere between 90 and 110 cd/m2 or so, the lower values being for dimmer enviroments. So, it all depends: no one value is good in all cases. It's probably not good to go too low with LCDs, though, and even 90 cd/m2 may be too low already.
Good luck.
-----
Marco Ugolini
Mill Valley, CA
-----Original Message-----
>From: fairfax_hutter <email@hidden>
>Sent: Mar 2, 2006 1:58 PM
>To: email@hidden
>Subject: Need to reset the Apple 23" Cinema HD Display brightness values back to factory defaults
>
>Does anyone know how to reset the 23" Cinema HD Display brightness values
>back to factory defaults in both Tiger and Panther? Need to calibrate my
>monitor. Am comparing the Eye-One Display 2 to the Colorvision Spyder.
>
>What is a good target brightness? 100 cds? Gretag MacBeth¹s Tutorial
>recommends 140 cds but I¹ve seen postings saying this is too high. Or in
>between?
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