Re: Epson 5500 Metamerism (was: Re: Not a Rocket scientist)
Re: Epson 5500 Metamerism (was: Re: Not a Rocket scientist)
- Subject: Re: Epson 5500 Metamerism (was: Re: Not a Rocket scientist)
- From: "Udo J. Machiels" <email@hidden>
- Date: Wed, 29 Aug 2001 15:02:58 +0100
>
I am Duo J. Machiels and I am doing some investigation in this problem what
>
they call metamerism.
>
>
My article was: Profiling Epson Pro 5500 with archival inks.
>
>
Hope the follow-up from Terry Wyse will help you.
>
As far as I did come with my own investigation, his suggestion is to use a
>
measuring device which does have an UV filter installed like the one from
>
him.
>
I think one of the things I will try today is going thru all the filters
that come with the Spectrolino (No filter, UV, D65 and Polarizer) and see
which comes closest to giving me a decent profile with the 5500 with a
minimum of editing necessary.
I thought it was very interesting that Andrew Rodney stated that on a 10000
that he profiled recently that the proof was closest when viewed under
tungsten light. I've found the EXACT SAME THING with the 5500. When put in
my 5K viewer they are consistently too green/yellow but when pulled out and
viewed under household incandescent they look pretty good. Could be that
Epson has somehow "tuned" the inks/5500 to work best under typical tungsten
lighting?
Terry
Udo:
When I look at my print viewed under household incandescent than I get an
incredible good match with both my monitor and the original which I scanned
with my Heidelberg scanner and using the ICC Epson standard output profile.
But I do want to look at them in daylight or 6500 K, so there is the
problem.
I am curious for the results of your test with different filters on the
Spectrolino.
At the moment I am in discussion with Spectrostar in the Netherlands.
It might be that they can offer a solution which I hope I will be able to
test in the near future.
Spectrostar is offering a special edition of the Spectrocam: Spectrocam UV.
This model (hand made!) is able to block the UV spectrum.
The software that comes with the Spectrocam makes it possible to read with
different colour temperatures like 5000K, 6500K and 7500K and some other
settings, than exporting the data to a software program which is able to
import this and maybe we have done the job.
Maybe this could offer a solution in optimising profiles for printing hard
copies optimised for viewing under different light sources.
I hope I can test this in the near future.
If it works, it would be great. (Also because the Spectrocam is a lot
cheaper than the Gretag Spectrolino.
Ok, let's hope we can solve the problems.
Udo J. Machiels
Atmos Design
United Kingdom