Re: Optical & PrintFix Issues
Re: Optical & PrintFix Issues
- Subject: Re: Optical & PrintFix Issues
- From: "Russell Proulx" <email@hidden>
- Date: Mon, 14 Jun 2004 00:27:40 -0400
- Priority: normal
On 13 Jun 2004 at 20:43, Doug Brightwell wrote:
>
Optical requests that I adjust the brightness to match the black and
>
white targets, but with the keyboard brightness control cranked all the way
>
up, the LCD falls way short of matching the black level and white level.
Here's what I've grown to understand about Optical:
1) download the most recent versions (OptiCAL 3.7.7 for Mac
and OptiCAL 3.7.8 for PC)
2) The black and white target numbers are only offered to
help you synchronize (match) multiple monitors to each
other. The values have no real meaning otherwise. You
should NOT be setting your monitor to these values. When
calibrating multiple monitors you'd do the worst monitor
1st and then, after noting it's poor performance black and
white values, you'd make all the other monitors look just
as bad by using those black/white values into the space
provided by Optical. That's the ONLY point to those
settings!
The black (set using the Brightness adjustment) should be
set using the VISUAL target and NOT a number. This is
because the the required brightness setting will be
different depending on the ambient brightness in your
working area. The darker your environment, the easier
you'll see shadow detail so the brightness can be set
lower: ie: you can still see separation between very dark
gray and black.
The white setting is done using the Brightness adjustment
and can be set as high as you wish. It's been mentioned
here before, brighter is better. Published recommendations
suggest 120 cd/m2 (or higher) though some argue that with
CRTs higher values may shorten monitor life-span when 100
cd/m2 might have been just fine for 'real world' needs. I
don't think setting the contrast to the highest level with
an LCD will do any harm.
The misunderstanding that's often made with the Optical
software that we're supposed to use a preset black and
white target value when calibrating a single monitor. This
is unfortunate and incorrect. It results in a monitor that
is not adjusted to its full potential. Recent versions of
Optical no longer have preset values entered when you 1st
load the software. When in doubt: read the instructions :-)
3) After you set the brightness according to the visual
target and the contrast (white) to its maximum setting then
all you do next is press Calibrate.
I do wonder if there's any difference between Optical and
Photocal if one is only calibrating one monitor?
Russell Proulx
Montreal, CANADA
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