Re: Slight color differences
Re: Slight color differences
- Subject: Re: Slight color differences
- From: Claas Bickeböller via colorsync-users <email@hidden>
- Date: Thu, 26 Sep 2019 16:57:01 +0200
Hi Roger,
there are some reasons that come to my mind:
1) The profiles do not represent the actual printer status anymore (or never
did)
- printer(s) changed after having done the measurements
- measurement errors
- inaccurate sampling of the individual printers’ non-linearities during
characterization
2) Nozzle issues (which is basically another reason for 1) :-)
3) Out of gamut colours (unlikely with the combination you mention)
Did you do a simulation of the result without printing?
Is the dE-distribution similar for both printers?
Just an idea to start digging into it.
Best regards
Claas
> Am 26.09.2019 um 15:57 schrieb Roger Breton via colorsync-users
> <email@hidden>:
>
> Hi everyone,
>
>
>
> I'm working on profiling two different Epson printers, a 7800 and a 7890.
>
> Even though both printers are using the same, exact substrate, is it to be
> expected that there would be some "slight (but visible) differences" between
> the two printers? (I know I can't show you the prints.)
>
>
>
> I convert from GRACol2006 to the 7800 and from GRACoL2006 to the 7890,
> using absolute colorimetry in both cases. Same conversion, same substrate,
> the only difference is the two printers.
>
>
>
> In your opinion, what could account for the slight differences I observe? Is
> it possible (that's my best take) that the difference in the generation of
> inks used on both of these printers could account for the slight differences
> I observe?
>
>
>
> Best / Roger Breton
>
> www.graxx.ca
>
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