I actually created the profile using 840 patches because of Anders Torger‘s
tests -I think that post has also been shared here recently-, but I think I
will start this experiment with minimum too, so 210 at the moment. Maybe I
didnt fully understand what you mean but I was asking what to print in
order to compare the profiles (as observed from the print) ? Is the
profiling target best to use for comparing the profiles as well ? Or maybe
another standard target ?
I will only use (relative) calorimetric intent and only thinking in terms
of accuracy so I will (try to) avoid anything perceptual or subjective. I
am looking only for in gamut color accuracy at the moment.
Mete
On Tue, 10 Dec 2019 at 2:24 PM, <graxx@xxxxxxxxxxxx> wrote:
Mete,
In my opinion, the smaller number of the patches the better. 210 patches
sounds good to me. Keep in mind that all profiles are not created equal. In
principles, the “colorimetric” tag, the one rendering intent you are likely
to use in your test, needs to be “constructed” in such a way that its
result ought to be comparable across various profilers. But, for reason
that are other than matching accuracy, the “perceptual” tag may show more
differences across profilers. Some with “pleasing” success, others with
questionable results.
I look forward to do this study, someday, with my Epson printer. It should
be interesting to analyze the manufacturer’s provided “canned” ICC profiles
with those I can crank on my own. And again, once I have the measurements,
I still have to be cautious with any conclusions until I have comparative
pictorials output.
Thank you for your question 😊
/ Roger
*From:* argyllcms-bounce@xxxxxxxxxxxxx <argyllcms-bounce@xxxxxxxxxxxxx> *On
Behalf Of *Mete Balci
*Sent:* December 10, 2019 6:16 AM
*To:* argyllcms@xxxxxxxxxxxxx
*Subject:* [argyllcms] comparing printer profiles
Hello,
What is the simplest acceptable and quantifiable way to compare the
quality of profiles ? I created a profile and I would like to compare it to
the manufacturer provided one. So I guess I print sth like a target with
both profiles, read both outputs with spotread and calculate the difference
for each from the actual values. What would be the smallest acceptable
target for that purpose, how many patches etc. ? I have i1 Studio, so I can
do max 210 patches in one A4.
Mete
