Re: Epson canned profiles
Re: Epson canned profiles
- Subject: Re: Epson canned profiles
- From: Andrew Rodney <email@hidden>
- Date: Mon, 16 Apr 2018 11:18:38 -0600
> On Apr 16, 2018, at 9:33 AM, ben <email@hidden
> <mailto:email@hidden>> wrote:
>
> On Apr 16, 2018, at 7:33 AM, edmund ronald <email@hidden
> <mailto:email@hidden>> wrote:
>
>> If you wanna take this further, print a large target say at 1440 and 2880
>> using an Epson and the same profile - run it through your favorite spectro
>> (or even calibrated scanner) and check the DE.
>
> I have zero interest in dropping a few grand on a printer just to verify
> Andrew's claims.
Making up FUD and posting is easier for you!
I have lots of interest in taking the time and spending a few bucks to make two
prints to illustrate your FUD, assumptions and misunderstanding here.
I printed two targets TC918s on an Epson 3880 a few hours ago, Glossy paper
with differing settings for resolution, speed and Finest detail. IOW, THREE
different settings in the print driver to make 918 color patches. This is with
the native Epson driver of course. The prints have only had about two hours to
dry but none the less, this is the dE report of the differences:
--------------------------------------------------
dE Report
Number of Samples: 918
Delta-E Formula dE2000
Overall - (918 colors)
--------------------------------------------------
Average dE: 0.87
Max dE: 3.47
Min dE: 0.08
StdDev dE: 0.44
Best 90% - (825 colors)
--------------------------------------------------
Average dE: 0.77
Max dE: 1.47
Min dE: 0.08
StdDev dE: 0.32
Worst 10% - (93 colors)
--------------------------------------------------
Average dE: 1.78
Max dE: 3.47
Min dE: 1.47
StdDev dE: 0.34
--------------------------------------------------
--------------------------------------------------
I'm not sure the data above will be understandable to you Ben. Or the actual dE
of the SAME target measured twice which those of us in the know, do know it
will never be 0.00. Or that the targets above should have 24 hours to dry. NONE
THE LESS, the average dE is 0.87 INVISIBLE! Yet you state that there's a
problem with printers you admit you don't own nor have any colorimetric data.
Science fiction instead of color science.
Now do provide us similar data that using different settings, in fact three in
the Epson print driver provide a problem you state! You can't. Because it's not
true.
“There are two ways to be fooled. One is to believe what isn't true; the other
is to refuse to believe what is true.”
― Søren Kierkegaard
<http://www.goodreads.com/author/show/6172.S_ren_Kierkegaard>
> Nor do I have the time to call all the shops in town to see who's got one and
> how much they'll charge me to run several feet of expensive paper saturated
> with ink, only to wind up with some random numbers and yet more worthless
> examples of modern abstract geometric art.
Making up FUD and posting is easier for you!
> I will note, though, the irony of being challenged to do so by the person
> (Andrew) claiming to have done exactly that when said person has yet to offer
> up any measurements of his own.
Wrong!
> I'd be genuinely curious, Andrew. What's the measured D50 L*a*b* for R=G=B=0
> with the printer (and your favorite paper) in its most economical mode versus
> in its highest quality mode? And what's the value that your single
> super-profile reports it to be?
I've provided far, far more colorimetric data above. Unlike you (you've
provided zero).
>
> Andrew also made mention of measuring half a dozen of the printers and
> averaging the results. What did the standard deviation of the measurements
> look like?
5000 patches, the average dE was 0.5!
> I can believe it was small, but Andrew's provided us with nothing but "trust
> me" bluster to put any of it in context.
You seem to only believe in what you've made up in your own mind! Until you've
experienced it, you've only imagined it. And hence the FUD from your side!
>
> Cheers,
Not really! But you seem to be happy making up misstatements without a lick of
data. Sad.
Andrew Rodney
http://www.digitaldog.net/ <http://www.digitaldog.net/>
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