on 11/29/00 3:47 PM, photoscientia at [EMAIL PROTECTED]
wrote:
> 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.
>
I thought the gamma for my monitor was about 1.5 based on the test at:
http://www.zonezero.com/calibration/english.html
Using your test, however, it appears to be about 1.8 - 2.0.
My monitor is a NEC XV15.
Don't know if that helps any.
--Berry
