Datacolor User to User Support Group.

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!

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
>
>
>

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
> >
> >
> >
>