Re: Repetitive Calibration with Optical
Re: Repetitive Calibration with Optical
- Subject: Re: Repetitive Calibration with Optical
- From: email@hidden
- Date: Sun, 12 Jan 2003 16:28:39 EST
In a message dated 1/11/03 2:28:01 PM, email@hidden writes:
>
On the "Calibrate" issue:
>
>
Under the "File" menu there are separate entries for step by step,
>
>
PreCal, Calibrate, Profile Validate and finally the combination
>
>
Calibrate&Profile. Based on that, I would expect the button labeled
>
>
"Calibrate" to do just that, not "Calibrate&Profile".
>
No it does the full "calibrate and profile" function, that would just make a
long button name. And how it goes about it may be advantagous on certain OSes
and under certain circumstances, so always using the button, not the menu
command is recommended if you are having problems.
>
>
On the PreCal issue not disabling previous adjustments:
>
>
Start OptiCal, select PreCal and proceed to the point where the gun
>
>
adjustments are made. Now if the checkmark in OptiCal for "Calibration"
>
>
is toggled, the measured gun values change. I can go back and forth to
>
>
PreCal and repeat it multiple time and the settings do not change as
>
>
long as I keep "Calibrate" turned off. PreCal should automatically
>
>
disable it.
The "Calibrate" button applies the video corrections built in the "calibrate"
phase while building the profile built in the "profile" phase. Don't go back
and forth to PreCAL while fooling with the setting in OptiCAL... you might
manage to create some kind of problem. Simply leave the "calibration on" (or
however its worded in your OS) checked, and you should be fine.
>
>
>
>
The 0.30 and 80.0 and 6500K numbers come from default values in the
>
>
OptiCal manual. I will try the brighter screen as you suggest.
>
>
>
>
I still do not understand why I get three different brightness readings
>
>
between PreCal. Calibrate and the Info printout.
If you Precalibrate to 80 can. m/s, then set a white point other than native
in OptiCAL, OptiCAL will force one or two of the guns to lower levels to
balance the white point... lowering your total luminance. Using native
whitepoint in OptiCAL, and Standard instead of Precision will eliminate two
places that the software could force changes between readings, and should
show similar luminance numbers.
C. David Tobie
Design Cooperative
email@hidden
_______________________________________________
colorsync-users mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/colorsync-users
Do not post admin requests to the list. They will be ignored.