Datacolor User to User Support Group.

Mr Tobie - 

Thanks again for your help. Another forum member has suggested that 
I can measure candelas as I set up the Spyder2Pro. Of course I know 
how to modify the Brightness of the monitor, but I haven't seen a 
way to measure candelas as I do that. Is there one? Is there another 
tool I should know about?

Thanks again - Bill Hansen




--- In colorvision_group@yahoogroups.com, Cdtobie <CDTobie@...> 
wrote:
>
> Your brightness adjustment is probably just the ticket. You could 
do  
> it a bit more scientifically by creating a new target with 
measured  
> white luminance, but it sounds like you've got it covered the way 
you  
> did of already.
> 
> C. D. Tobie
> WW Product Technology Mngr.
> Digital Imaging & Home Theater
> DataColor.com
> CDTobie@...
> 
> On Aug 24, 2008, at 5:54 PM, "bill_hansen20012001" <b2hansen@... 
>  > wrote:
> 
> > Mr Tobie –
> >
> > Thanks again for your prompt reply. I do indeed have the 
Spyder2Pro
> > (SN 201710-898280-118715) and I did leave the LCD baffle in place
> > when I profiled the monitor.  As always, I made sure that no 
ambient
> > light could fall on the LCD screen (and actually, that there was
> > almost no ambient light to begin with).
> >
> > For what it's worth, I've found that by lowering the monitor's
> > Brightness to about 60% during the setup of the Spyder2Pro, the
> > brightness and color problems almost completely disappear.  With
> > this change, edited images look essentially the same as they 
looked
> > on my old CRT monitor, but of course there is some "eyeballing"
> > involved.  Is this lowering of LCD brightness a useful way to
> > proceed?
> >
> > I do not know how to "create a target with a white luminance of
> > about 100 to 125 candelas."  If it is necessary for me to create
> > such a target, can you direct me to instructions on how to create
> > such a target, AND how to use it with the Spyder2Pro?
> >
> > My LCD monitor has controls for Brightness, but does not have a
> > Backlight control.  Your direction to tell the software that the 
LCD
> > has a backlight control and NOT a brightness control may 
indicate my
> > ignorance of LCD monitors. Is the control, indicated 
as "Brightness"
> > in the LCD firmware, actually a Backlight control?? (Makes sense
> > that it could be.)  I've experimented with choosing "Backlight
> > control" instead of "Brightness control" and I don't see any
> > difference when attempting to set white point or black point, or 
in
> > the resulting profiles.
> >
> > Thanks – Bill Hansen
> >
> > 
*********************************************************************
> > **************************************************************
> >
> > I had trouble calibrating my new LCD monitor with the Spyder2Pro,
> > with the following difficulties:
> >
> > Images, previously edited in PS CS3 looked "perfect" on my old
> >> profiled CRT monitor. On LCD, profiled with Spyder, those same
> >> images look too bright by about 5-10%, and are too blue by about
> >> 15%.
> >
> >
> > CD Tobie replied:
> >
> > Your issue with brightness and blueness is caused by the display
> > being
> > too bright. Try the ambient light feature, or simply create a 
target
> > with a white luminance of about 100 to 125 candelas. That assumes
> > you
> > own Spyder2Pro; if not, then dim the LCD before calibrating. Be 
sure
> > to tell the software your LCD has a backlight control NOT a
> > brightness
> > control!
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
>