[argyllcms] Re: How many patches?

Thanks Roger.

I'm profiling an Epson inkjet (the 2200), and my understanding is that
this printer is highly non-linear. (certainly looks like it to me, anyway)

Started on 836 patches, but saw a definite improvement when I 
went up to 3000.

Greg.

-----Original Message-----
From: argyllcms-bounce@xxxxxxxxxxxxx [mailto:argyllcms-bounce@xxxxxxxxxxxxx]
On Behalf Of Roger Breton
Sent: Monday, 25 July 2005 21:56
To: argyllcms@xxxxxxxxxxxxx
Subject: [argyllcms] Re: How many patches?

> How do I determine the ³point of diminishing returns² for adding more
patches
> to a target, other than simply creating larger and larger targets,
> reprofiling, and reassessing test prints?
>  
> Greg.

I did suprisingly good profiles with only 60 patches last spring, using a
Xerox Phaser 860. Of course more patches was better. But in general, I guess
it¹s a function of the ³linearity² and monotonic behavior of the device that
should determine the sample size.

Regards,

Roger Breton  |  Laval, Canada  |  graxx@xxxxxxxxxxxx
http://pages.infinit.net/graxx

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