Datacolor User to User Support Group.

Hi David,

      I certainly appreciate your quick reply. The Spyder is set up
per your software recommendations. It is set 1 foot from the screen,
in the dark and the projector is projecting full size screens of color
patches. Question on the baffle. Is that the black plastic piece with
the suction cups for the lcd displays? I notice it's detachable.
Should that be on or off?

   I'm going to check about whether or not our software is color
managed. One other thing that I forgot to mention is that we're using
the laptop in dual display, Windows extension mode where we have
separate profiles for the laptop's lcd screen and the external VGA
port. Using your profile chooser application I can clearly see the
correct profiles for both laptop screen and external projector.

Thanks,
Jim


> In a message dated 9/15/08 1:12:33 PM, james.west@... writes:
> 
> 
> >    Projector is set up for defaults using Canon's sRGB input mode on
> > the analog input.
> > 
> That concerns me a bit, is there a mode that isn't sRGB?
> 
> >  Projector driven by our HP laptop's VGA port with
> > resolution set to 1400 x 1050 using 32-bit color mode.
> > 
> That part sounds fine...
> > 
> >    Using Spyder2Pro we walk through the steps for projector
> > calibration using gamma setting of 2.2 with native mode white point.
> > 
> Those settings are correct...
> 
> > This projector has brightness and contrast controls so we use that
> > setting. While tweaking the brightness and contrast I do notice that
> > it seems difficult to obtain a lot of separation in the multiple white
> > and black boxes in the next couple of calibration screens.
> > 
> Well, then you may not get good highlight and shadow detail with your 
> projector, but you don't want to make adjustments so extreme that
they ruin the rest 
> of your image attempting to chase highlight and shadow detail.
> 
> You don't note how you are setting the Spyder up (some people simply
refuse 
> to set it a foot from the screen, looking at its own shadow, others
forget to 
> remove the baffle, so there are two possible issues) and you don't
note how you 
> are displaying images (if its from a non-color managed application, the 
> projector profile simply isn't going to get used).   And a last
possibility: are 
> you calibrating in the dark? I mean the pitch black? Thats the right
way to do 
> it, as screen black is only as dark as the room you are working in.
Oh, and one 
> last question: is the software projecting full screen color patches?
If its 
> not, for one reason or another, you really can't profile the
projector with 
> just a small color patch in the middle of the screen, the way you
would with a 
> monitor...
> 
> C. David Tobie
> WW Product Technology Manager
> Digital Imaging & Home Theater
> Datacolor
> CDTobie@...
> www.datacolor.com/Spyder3