JoeT,
Thanx for your input regarding my checking "Color Management Settings". I
have posted a screen shot of each of (3) tabs, but due to my weak
understanding of these settings, am reluctant to change anything until learn
more about them.
http://localsbackyard.com/WCM.jpg
Color Management can be a very complex topic filled with all kinds of
subjective interpretations that can lead even experienced users down
the garden path. To learn more, good search topics to explore on the
Web include Color Management, Color Space and Color Theory.
For starters a lot of people aren't aware different devices operate in
different color spaces. In simple English that just means your
scanner,printer, video camera, etc., may and very likely will
reproduce hues differently since their color spaces are different,
sometimes markedly so.
One example often seen in video work is how different hues and
luminance levels can appear when looking at the same video on a
computer monitor running in RGB color space and then playing it off a
DVD viewed on your big screen TV since it was converted to NTSC specs,
which clip levels in effect changing the black and white points among
other things. A topic that came up a couple months ago in this
newsgroup and true to form the fanboy crowd got totally wrong and went
into their usual ranting and raving mode.
Better graphic applications like Photoshop allow you the user to
either ignore color profiles all together or substitute a different
one depending on what you're going to do with the image. For example
you may select one color profile to view images on your computer, but
pick a totally different one if you intend to print out a high quality
color image on glossy paper.
Again Photoshop TELLS who (if you set it up correctly) what if
anything is embedding in your graphic files. You have three choices:
1. No color management, any embedded color profile is discarded.
2. Use the embedded color profile.
3. Convert colors to match the current working space.
The idea behind color profiles is to MATCH to X where X is some
desired result. Because of HOW color spaces differ in how they
reproduce color, example; printers use ink often based on 4 colors or
CMYK colors, while computer monitors use a color space based on RGB
values. To print some image on glossy paper and have it match as close
as possible to what you see on your monitor the color profile shifts
hues so the inks used will as close as possible match what you see on
screen when you print it out on paper.
Photo Gallery uses a particular profile based on RGB color space.
Without checking, I think it uses sRGB so images are impacted by the
application of this profile. If you have other higher end applications
installed like Photoshop they may have and like will use another
profile so that explains why images can look very different depending
on what you view them in.
You can see how your system is set up by going to Control Panel and
selecting Color Management. The advanced tab lets you make changes,
Vista's build in help explains it in more detail.
In summary I never would and don't recommend anybody use Photo Gallery
for anything other than a quick and dirty thumbnail viewer and do
actual work on or printing of images from applications better suited
where you have much more control.