Datacolor User to User Support Group.

Hi,

Colorvisionstartup.exe is ColorVision's application which loads the
calibration profile into the video card. What I am unsure is if I
really need it.

If I use Photoshop, there are 3 states:

1. No ICC profile assigned to the display: this is clear, I'm working
on an uncalibrated monitor. Photoshop and Windows built in image
viewer (which does not understand profiles) displays a given image the
same way.

2. ICC profile is assigned to the display, but colorvisionstartup.exe
is not started: Photoshop interprets the assigned profile, and
displays the images according to it.
Photoshop and Windows built in image viewer displays a given image
differently.

3. ICC profile is assigned to the display, and colorvisionstartup.exe
is started: There is a visible difference on the whole screen when
this app starts. PS and Windows built in image viewer are still
different to each other, but they also display images differently than
in case #2. It's like in this case, the profile is applied "two times".

So my question is: do I need this program at all or PS can manage the
assigned profiles alone. In the latter case: what is this application
is for?

Sandor