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Posted by cwdjrxyz on 12/03/42 11:45
Toby Inkster wrote:
> Jim Higson wrote:
>
> > If you're talking about exact colour rendering (Pantones etc), there's no
> > way to get them right, but the PNG format helps a bit because you can store
> > gamma information (although I'm not sure which browsers will use it, and
> > anyway most users won't have their browsers set up for it).
>
> Gamma is supported by any vaguely recent Gecko browser, Opera and IE/mac
> (as well as a handful of other minor browsers -- Amaya and Dillo spring to
> mind).
>
> More important is what's missing though: IE/win, Safari and Konqueror.
We have been talking about color rendition with the assumption that the
monitor or TV screen is capable of and set for perfect color rendition.
However I have seen cases when the adjustments of the monitor are very
far off. You become used to poor color rendition, if not too extreme,
very easily. To accurately set the monitor you need a test DVD such as
is used to set up home theatre. It not only allows adjustment of the
images, but also the audio for multi-channel set ups. The very best
adjustment may require instruments, but many test DVDs come with
filters for your eyes and other devices to make very good adjustment
possible.
Lacking a test DVD, the color bars and test screens broadcast by TV
stations can be helpful, but they are seldom on anymore where I live,
and they will not help for your computer unless you have a TV tuner in
the computer.
I have an old monitor adjustment page at
http://www.cwdjr.net/tool/a_color_bars.html that still gets a few hits
despite the age of it. I strongly suggest using the mentioned DVD home
theatre set up test discs, but the color bars and other tests on my
page are better than nothing.
Not all monitors or TVs have all of the adjustments needed for best
reproduction on the screen. Home theatre projectors tend to have more
adjustments than most other formats. However, on smaller TVs, there
often are many additional adjustments on a hidden menu. The key to
bringing up this menu usually is not provided to buyers of the TV,
because using some of the hidden adjustments require instruments, and
one can easly greatly distort the image or even damage the TV. My
computer monitor has more adjustments than a typical small TV, but not
as many as most TV projectors. I do not think it has any hidden menus,
but who knows for sure.
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