> >>You really don't have a choice for either setting when calibrating a
>>>monitor. The calibration programs require certain settings, read the
>>>results off the screen and have you modify settings until the hardware
>>>piece reads correct colors. If you then change any monitor setting,
>>>you
>>>have wasted the cost of the calibration system and your time in using
>>>it. BTW, they usually set contrast to 100%.
>>>
>>>
>>Yes, if you change it afterwards. I just wasn't sure what it's
>>"looking" for when you do the callibration.
>>
>Those requirements are very specific, you can't start from wherever you
>wish.. With Monaco, and I believe with others, Contrast is to be always
>at 100%. Then you set brightness to 0, then 100% while it measures, then
>it has you set brightness to the correct level by adjusting it while the
>puck measures and a guide shows if you are over or under the desired
>level. It is only after that that it goes on to color.
>
>Moose
The procedure depends largely on the capabilities of the software. My
first puck, the Gretag EyeOne Display, had you set monitor luminance
(contrast, often mistakenly referred to a brightness) to100%. This
resulted in a print brightness/monitor luminance mismatch,
particularly with respect to shadow detail.
The Monaco XR Pro software, as well as ColorEyes Display, allows you
to set monitor luminance so as to allow better matches with print
brightness. The software requests input target points for brightness
(actually the black point of the monitor) and contrast (the effective
white point) and then measures the display output. It then guides you
as to how to set brightness to achieve a desired black point (I
usually target about 0.3-0.4 Cd/m^2 for black point). It then guides
you to set contrast (white point) to acheive a luminance in the
desired target range. I target my LaCie EBIV to about 85-90 Cd/m^2,
and my Dell LCD Ultrasharp to 120 Cd/m^2. This sets what I find
matches paper white with respect to brightness the best. The software
then goes on the throw up the color squares from which the display
color profile LUT is built. Of couse, I target D65 as the color
temperature, based on the recommendations of the country's best color
management experts and my empirical testing. I found that my print
results using the Monaco DTP-94 colorimeter and XR Pro software
improved dramatically compared to my EyeOne Display.
-Stephen.
--
2001 CBR600F4i - Fantastic!
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