Hello !

I have been working for more than a year on making a slideshow from about
1000 photos I took trekking the Himalayas (with a Pentax Optio 330). I have
worked with Photoshop 6 for several months on a Thinkpad 380Z portable
computer, then again a few months on a laptop computer (I forget what it
was) and now with Photoshop 7 on a third computer. Some photos which looked
beautiful when seen on my Thinkpad now look like they need to be brightened
a lot... When noticing this, I bought a book on Photoshop (Adobe Ps 7, New
Riders) and tried to learn all about color profiles. Not easy (probably not
simple from the start, + reading a French translation). I now have a lot of
questions !

1) Could you provide links to tutorials explaining the Photoshop color
management system ? Being a computer engineer, I like to know how things
work inside, and I have not fully understood color profiles, workspaces,
etc.

2) From what I understand, I should build a color profile for each of the
PCs on which I worked, then attach this profile to all photos which were
retouched on each PC ? How do you recommend to do that (I still have the
Thinkpad, but I have no more access to the second PC I used) ?

3) For calibrating the screen on which I work, I have heard or read about
expensive software. Can one not find paper color samples to place near the
screen, then calibrate the screen colors using these samples, which could be
very inexpensive ?

4) After learning about color profiles, I switched the Photoshop RGB
workspace to "Adobe RGB (1998)" (yet another source of disparity !). I have
noticed that when suppressing the embedded color profiles, the photos look
better ! Is that normal, should I therefore suppress all embedded color
profiles ?

5) My slideshow is meant to be displayed on a screen with a video projector.
However I have no video projector of my own and I borrow one when needed, so
it is not always the same. Before displaying the slideshow, I suppose I
should ideally also build the color profile of the video projector so as to
display things right ?

6) Last : is it possible that some slideshow software (Acdsee, Irfanview,
...) do not take into account embedded color profiles so that taking pains
to make things right is perhaps useless ?

Thank you in advance for your answers

Jean-Marie