Re: PhotoCal/XP worketh not!

["Alan Rew" <arew@patrol.i-way.co.uk>]

----- Original Message -----
From: wogears <wogears@fast.net>
To: <epson-inkjet@leben.com>
Sent: Monday, February 04, 2002 2:58 PM
Subject: PhotoCal/XP worketh not!


> Hello!
>
> I am attempting to use PhotoCal with Spyder (the real one)
> on Win XP Home. I DON'T get the crashes and hangs that some
> do, but I have still managed somehow to bollix things up
> thoroughly!
<snip>
> Conversely, how do I disable Adobe Gamma entirely
> if necessary, and where do the video LUT's reside so I can
> also get rid of them should I have to?

I'm using the original Spyder/PhotoCal bundle successfully on 98SE, and
I recall that Adobe Gamma caused me a problem initially. Unfortunately
the PhotoCal documentation didn't have any reference to this, which is a
pity.

You <must> de-activate Adobe Gamma if you are using a custom profile
made by the Spyder (or any other 3rd party device).
I can't remember how I did this, but I should think you merely need to
remove it from your PC's start-up group.

YMMV, but if you go Start->Programs->StartUp you should see all programs
that are started this way. If you see Adobe Gamma there, just drag it
off the start menu onto the desktop. Then reboot your machine. Note that
the PhotoCal start-up app <must> be in the start-up group. If not, you
may not have installed it correctly.

If you right-click on the desktop & go to
Properties->Settings->Advanced->Color Management, the PhotoCal profile
should be associated with your monitor and set as the default (PhotoCal
sorts this all out, at least it does for me on 98SE). If it's not then
try re-running PhotoCal, as Adobe Gamma may have fouled things up.

Also note that you should leave your monitor switched on for at least 2
hours for the colours to stabilise before profiling. Otherwise profiling
will be a waste of time - the colours will drift as the tube warms up.

The PreCal feature in PhotoCal should be used if possible to balance the
guns prior to profiling, assuming your tube has controls to do this.

Note that the LUT updates done by PhotoCal are not permanent: the LUT
gets re-loaded by the video card firmware each time it's powered on.
This is why PhotoCal <needs> to be in your start-up group, so it can
overwrite the video card default LUT with its own data from the profile.

If you still get a colour cast you may wish to contact ColorVision
support as it then might be a genuine bug rather than a workflow
problem.

HTH

Alan Rew


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