RE: [APML] monitor adjusting

[Blair Batty <bbatty@nseaa.com>]

> > -----Original
> Message----- 
> > From: Blair Batty
> [mailto:bbatty@nseaa.com]
> > 
> > Since I got a scanner, I've been much more interested
> in 
> > colour space, etc. I've got a good monitor which I
> thought 
> > I had well adjusted. However, following the excellent
> information, 
> > instructions and tests on the link below, I've
> corrected my monitor 
> > (hardware) adjustments and finally (I think) got
> Photoshop colour 
> > settings correct. The monitor screen is now different,
> better 
> > and more true. The site is very slow
> downloading... 
> > 
> > See: 
> > 
> http://www.pp.clinet.fi/~timothy/aim/index.htm
>
>
> Hmmm.  This is indeed a nicely prepared site with lots of 
> interesting presentations, albeit from a slow server.  Unfortunately 
> Mr. Autiokari maintains a fundamental misunderstanding about 
> image encoding.  It may be that if you follow his advice and 
> understand his (not quite correct) logic that you can successfully 
> process images, but I think you would end up working harder and 
> suffering severe artifacts.  If you find otherwise, let me know. 
>
> I will offer only a single rebuttal to the many errors contained 
> there:  "middle gray" (approx 18% reflection) is encoded in an 8-bit 
> gamma 2.2 system by the code value 117.  If you follow his recommendations 
> and use a linear (gamma 1.0) system, the code value is 46.  Would you 
> consider an image to have only 46 levels between black and middle gray 
> (and 209 between gray and white) to be better than one which has 
> a more even split? 
>
> Thor. 

Thanks for your insight, Thor. Frankly, I didn't understand a lot of
the jargon and theory; and his recommendation of gamma 1.0 conflicted
with other advice so I used the PC standard gamma 2.2.

But his method of setting the monitor black-point, white-point,
contrast and all the other steps to setting the adjustments were so simple,
logical and non-objective. My monitor "looks" much better now.
Other than the gamma settings, do you have any concern about his
monitor adjusting instructions?

Sincerely
Blair Batty,
Simcoe.ON.CA