From: photoscientia <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, November 29, 2000 11:47 PM
> Hi all,
>
> Can I steer this back to monitor calibration please?
>
> I've been experimenting further with dithered tones, and I'd like your
collective
> opinion on these little
> 'greyscales' that I've come up with.
> They're very small little GIFs, so I've taken the liberty of attaching
them.
>
> There's a greyscale GIF for each of 8 target gammas, in 0.2 steps from 1.0
to 2.4.
> The idea is to get the closest match between the inner and outer squares.
> The best method is to view them from a distance of 3 or 4 ft (1 to 1.5
metres), and
> half close your eyes to blur the dithered centre square; then you can see
if the
> tones match more easily.
> The square with the number in it is a 'key' tone, and is the one most
critical to
> assessing the gamma, but the other 3 squares should be a good match as
well.
> Oh, yes. They must be viewed at 1:1 scale as well, otherwise they won't
work.
>
> I know the idea isn't original, but I've only ever seen single tone
examples before.
> These cover a wider brightness range, and I think they should give a
pretty good
> gamma match, or indication of system gamma, within the limits of simple
visual
> comparison.
>
> I don't have a huge range of systems and monitors to test them on, so I
hope some of
> you will act as guinea pigs, sorry, beta testers, for me.
> I'm not asking you to change the settings of your monitor or video card,
but I hope
> that a lot of you reading this list will know the gamma of your system
fairly
> accurately.
> If you could check the relevant GIF and some of the others against your
known system,
> and give me some feedback, I'd be most grateful.
>
> Thanks for taking the time to read this.
>
> Regards, Pete.
>
Maybe a better Monitor Gamma Calibrator:
http://www.spurgeonstudio.com/NoFrame/moncal.htm
Mark L.
