Re: Epson canned profiles
Re: Epson canned profiles
- Subject: Re: Epson canned profiles
- From: Andrew Rodney <email@hidden>
- Date: Tue, 17 Apr 2018 13:25:28 -0600
On Apr 17, 2018, at 1:07 PM, ben <email@hidden> wrote:
>
> On Apr 17, 2018, at 11:14 AM, Andrew Rodney <email@hidden> wrote:
>
>> The first URL wasn't set to dE 2000/D50!
>
> ...the URL which you supplied, of course. I've been very careful to let you
> do whatever math makes you feel good, and simply repeated the various numbers
> back to you. That you can't punch the numbers properly into your calculator
> is _your_ problem -- as much as is your obsession over a fractional
> percentage of a calculation error when we're doing back-of-the-envelope scale
> checks.
It's not my math. It's the correct math from the application as set and the
settings can differ. NONE produce a dE you tell us it will using an image
editor.
> And, all the while that you're obsessing over fractions of a dE, you're
> _equally_ obsessing over your bizarre misconception that 1 dE is a magic
> threshold, with anything greater a real color and anything less invisible.
That's only your misunderstanding of dE, why we have differing formulas, when
to use one over the other and why you'd suggest, again incorrectly that the Lab
values you provided are are wrong and assumed, your exact text below:
>> Fill half the screen with L*a*b* 6, 1, 4. Fill the other half with 7, 1, 4.
>> Overlay a couple patches of 6, 0, 0 and 7, 0, 0.
>>
>> By your very own math, the two background halves differ by 0.85 dE
Wrong! And illustrated to be wrong, and I never said the two lab values YOU
made up above there equal a dE of 0.85.
I never said that something below a 1.0 dE using any formula isn't a color.
You're confused AGAIN. And you still don't appear to know what dE is; a
distance (difference) in color between to color values, not what is or isn't a
color. You failed the class. Again.
> The point you're missing is that there are contexts in which a fraction of a
> dE is quite significant _and_ there are contexts in which even as much as 10
> dE just doesn't matter at all.
Tell us what image editor you're using and recommend to us that provides
fractional dE values. Tell us what image editor you're using and recommend to
us that provides differing dE formulas. Like the one's Iliah and I have shown
you.
You cannot. You not only don't have a sufficient undertanding of dE, you don't
have the tools to produce any dE data. And worse, you accuse me of my math
being wrong. Very foolish.
> Even in a printing environment!
Moot.
> Get an inversion in your profile of even a very small amount and it'll stick
> out like a sore thumb. Indeed, one can imagine a profile with very impressive
> average dE fit results -- even better than those that you've been bragging
> about -- that was actually a bunch of zig-zag stepwise inversions that would
> create truly miserable output, even to the completely uninitiated. Or even a
> profile that has 0.1 dE error for every patch but the white and black points,
> and had a 0.99 dE error for both, in different directions; that's not going
> to be pretty at all. But the average error is 0.1000001 dE, and the maximum
> error is under 1 dE!
Diarrhea of the keyboard. You made a statement about a dE value above that's
wrong. It isn't what you reported. Like the so called "problem" you thought
about Epson drivers and profiles that was dismissed with colorimetric proof.
You were totally wrong about that too.
I'll clip the rest of the Diarrhea from your keyboard. You've been shown to be
utterly wrong about multiple color concepts over the past two days. Your hole
continues to grow. You can't even be taken for your own words ("goodby"). Which
would have been a smart move on your part.
I see little need or reason to continue to show others how confused and wrong
you have been; why do you continue to make yourself look so foolish? Please
don't answer.
"Wise men speak because they have something to say; Fools because they have to
say something". -Plato
Andrew Rodney
http://www.digitaldog.net/
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