[argyllcms] Re: I don't understand the -u option

On Tue, 2009-02-24 at 17:05 +1100, Graeme Gill wrote:
> Leonard Evens wrote:
> 
> > dispcal -v -yl -qh -t6000 -b125 -g2.2 -p .7,.5,.6 -u TargetX -o TargetY
> > TargetX.cal was updated, but nothing else changed as best I can tell.
> 
> See <http://www.argyllcms.com/doc/dispcal.html#u>. Note that
> any options other than the quality setting will be ignored if
> you use -u, since you are requesting an update to an existing
> calibration. I have no idea why you think this will be any
> assistance in changing the gamma.

That is helpful.

I don't seem to have much luck in choosing gamma I want.  Can you
suggest a reasonable strategy for accomplishing  that.   The problem
seems, at least in part, due to the idiosyncrasies of my monitor, a
Samsung 226cw.  I've tried working with the default settings and also
using the monitor controls, and neither approach seems to work very
well.  It seems that if I get one thing right, something else is bound
to be wrong.

Also, it seems that dispcal -r may be giving me misleading information
about gamma.  I believe we've discussed that before, but clearly it
didn't penetrate since I still don't understand it.


> 
> > One other question.
> > I am using an Eye One Pro.  Each time I use it, I am asked to calibrate it, 
> > which I do using the appropriate holder.  If I make repeated attempts,
> > one after the other, is it okay to skip the calibration step?
> 
> Yes, that's what the -N option is for.
> See <http://www.argyllcms.com/doc/dispcal.html#N>
> 
> Graeme Gill.

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