Re: Profiling through laminate
Re: Profiling through laminate
- Subject: Re: Profiling through laminate
- From: "john c." <email@hidden>
- Date: Sat, 21 Feb 2004 12:44:16 -0500
In this regard, wouldn't a glossy laminate not be a problem and maybe even
an advantage because it reflects the direct light of the instrument away
from the sensor. In other words, isn't the effect of polarizing the light to
make a matte surface appear as deeply saturated as it would as if it had a
glossy surface? We found that to get the best results when we profile canvas
(we don't have an instrument with polarizers), we coat the targets with
varnish until they're as smooth as glass.
john castronovo
tech photo & imaging
----- Original Message -----
From: "Steve Upton" > >
>
>Thanks for the response. Why is a polariser necessary?
>
>
We've found that the reflections from laminated materials cause a
significant amount of the instrument's incidental light to be reflected
without the colorants of the print having filtered the light. This means
that colors are lightened and desaturated - especially darker colors. If the
instruments saw the colors the same way as your eyes then it would not be an
issue. It's when when your eyes and the instrument disagree that filters
such as the polarizer come in handy.
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