Looking for supporters to provide Richard H with ColorMunki Photo

[Pascal de Bruijn]

On Fri, Feb 12, 2010 at 11:42 AM, Pedro Côrte-Real <pedro at pedrocr.net> wrote:
> On Thu, Feb 11, 2010 at 11:38 PM, Pascal de Bruijn <pmjdebruijn at pcode.nl> wrote:
>> Your hack was pretty cool, but it's not really handy to implement as a
>> generic solution for GCM, we need no fuss solutions.
>
> We will surely need a default mode that does that but my experience
> with doing it like you do bellow is that 200 patches isn't really
> reasonable. With the default settings you need 2 Letter pages to do
> ~190 and that generates pretty useless profiles. So to do the ~450+900
> patches I ended up using for a decent profile you'd need ~15 pages
> which is a terrible waste of paper and ink.
>
> Like Richard says, it would be great to have the profiling instruments
> defined in a config somewhere, so that one can define a "Munki" and a
> "Pimped-out Munki". Exposing the argyll config flags in an "Advanced"
> UI probably makes sense too as people doing color profiling would tend
> to be advanced users.
>
>> This works very well for me... and would be a great default for medium quality:
>>  argyll-targen -v -d2 -f 210 xxx
>
> I ended up only getting good results at 450+900 patches. I suppose
> lower than that could also work. This should probably be given as an
> option to the user. Maybe a slider with markings or poor - basic -
> good - great and an automatic calculation of how many pages it is
> going to print, so that the user can do the tradeoff himself.

Highly depends on what kind of accuracy ones expects...

210 patches and -qm works reasonably well...

I actually tried making a profile using 840 patches, and -qh, and I
don't see a big difference here... Though my printer is much crappier
than yours.

>>  printtarg -v -i CM -h -T 300 -p A4 xxx

Anyway, patches count should most likely always be multiple of what a
single sheet can hold...

1x A4 -> 210
2x A4 -> 420
3x A4 -> 630
4x A4 -> 840

This may be different for letter (190?).

> My hack uses "-i i1". I haven't used the -T one. What does increasing
> the resolution help with?

This is seriously not an option for GCM... requiring users to make
their own DIY patch reading guide.

The colorimeter/spectrophotometer should work as develivered by the
manufacturer...

GNOME is about making things work as expected... not requiring DIY
hobbying/hacks...

For these kinds of strategies, using the Argyll commandline tools
should be fine.

Regards,
Pascal de Bruijn