Datacolor User to User Support Group.

I am using Spyder 2 Pro 2.2.  What is the difference between/relation 
between White Luminance and the Y value I get when I calibrate with the 
Colorimeter CIE xyY?  Thanks.

Matthew Kraus

Thanks for the reply.  If I desire to lower the Y value (White 
Luminance), is the best way to do this with the Contrast control on 
the front of the LCD moniter?

Thanks, Matthew Kraus

--- In colorvision_group@yahoogroups.com, CDTobie@... wrote:
>
> 
> In a message dated 1/10/08 8:26:00 AM, mkraus1044@... writes:
> 
> 
> > I am using Spyder 2 Pro 2.2.  What is the difference 
between/relation
> > between White Luminance and the Y value I get when I calibrate 
with the
> > Colorimeter CIE xyY?  Thanks.
> > 
> > Cap Y is the current White Lumiance, and should match what is 
shown in the 
> Info window for Cap Y. If it doesn't match you may be measuring in 
the 
> uncalibrated state/calibrated state, thus causing the difference.
> 
> C. David Tobie
> Product Technology Manager
> Digital Imaging & Home Theater
> Datacolor
> CDTobie@...
> www.datacolor.com/Spyder3
> 
> 
> **************
> Start the year off right.  Easy ways 
> to stay in shape.
>      
> http://body.aol.com/fitness/winter-exercise?
NCID=aolcmp00300000002489
>

Thanks very much.
Matthew Kraus

--- In colorvision_group@yahoogroups.com, CDTobie@... wrote:
>
> 
> In a message dated 1/10/08 2:35:45 PM, mkraus1044@... writes:
> 
> 
> > Thanks for the reply.  If I desire to lower the Y value (White
> > Luminance), is the best way to do this with the Contrast control 
on
> > the front of the LCD moniter?
> > 
> > 
> If you have a display that offers a contrast control (rare in this 
day of 
> control-less LCDs) then yes, check the box saying you have a 
contrast control, 
> choose Measured Mode, define a white luminance thats lower than the 
native 
> white, and the software will prompt you to make the adjustment 
during running the 
> application to your target white luminance, using the contrast 
control. Its 
> always best to adjust via hardware controls, if they are available.
> 
> C. David Tobie
> Product Technology Manager
> Digital Imaging & Home Theater
> Datacolor
> CDTobie@...
> www.datacolor.com/Spyder3
> 
> 
> **************
> Start the year off right.  Easy ways 
> to stay in shape.
>      
> http://body.aol.com/fitness/winter-exercise?
NCID=aolcmp00300000002489
>

Sorry.  Still am befuddled.
I reset moniter to factory default values which are Contrast 65 and 
Brightness 100.  I open software and get a Colorimeter reading of 163 
as a baseline. I then use WP 6500 and Gamma 2.2   I select Measured 
Mode and set White Luminance at 125.  I continue and it asks me to 
select the controls I have.  I have a Samsung Synchmaster 214T which 
has Brightness and Contrast controls on the front menu.  I only 
select and check the Contrast box.  It now opens Set White Luminance 
Screen.  It asks me to set the White Luminance.  I assume I do not do 
this by looking at the 4 white boxes, but reopen the Colorimeter to 
get numerical value.  But
.before I touch any of the controls, I 
remeasure with the colorimeter and the value is now 218, not 163!  
This changed after I selected the contrast box.  I don't know what 
happened or what to do now.  I was planning on lowering the WL value 
from 163 to 125, but now it meaures 217 before I even touch it.  I 
don't know where to set it for.  I'm really confused.  Can you help 
me understand this?  I'm obviously making some errors here.  Thanks.

Matthew Kraus


--- In colorvision_group@yahoogroups.com, "tech4x5" <mkraus1044@...> 
wrote:
>
> Thanks very much.
> Matthew Kraus
> 
> --- In colorvision_group@yahoogroups.com, CDTobie@ wrote:
> >
> > 
> > In a message dated 1/10/08 2:35:45 PM, mkraus1044@ writes:
> > 
> > 
> > > Thanks for the reply.  If I desire to lower the Y value (White
> > > Luminance), is the best way to do this with the Contrast 
control 
> on
> > > the front of the LCD moniter?
> > > 
> > > 
> > If you have a display that offers a contrast control (rare in 
this 
> day of 
> > control-less LCDs) then yes, check the box saying you have a 
> contrast control, 
> > choose Measured Mode, define a white luminance thats lower than 
the 
> native 
> > white, and the software will prompt you to make the adjustment 
> during running the 
> > application to your target white luminance, using the contrast 
> control. Its 
> > always best to adjust via hardware controls, if they are 
available.

> > 
> > C. David Tobie
> > Product Technology Manager
> > Digital Imaging & Home Theater
> > Datacolor
> > CDTobie@
> > www.datacolor.com/Spyder3
> > 
> > 
> > **************
> > Start the year off right.  Easy ways 
> > to stay in shape.
> >      
> > http://body.aol.com/fitness/winter-exercise?
> NCID=aolcmp00300000002489
> >
>