Datacolor User to User Support Group.

Tom,
yes indeed I do mount my prints on that black paper, the idea to read
patches on a black base hit me when I saw that the brands show trough.
I didn't measure the difference, I just do it to avoid any reflections
from the base because the backside of my paper is obviously unevenly.
My idea was, to get a patch reading without any variations from behind!

Best,
Peter


--- In colorvision_group@yahoogroups.com, "Tom" <ttrostel@...> wrote:
>
> --- In colorvision_group@yahoogroups.com, "peter_woelk"
> <peter_woelk@> wrote:
> >
> > 
> > Hello together,
> > because I use many papers which have printed their brand names (Epson,
> > Canon) on the backside, I recommend (and I do so with success) to use
> > a dark base to avoid mostly any reflection. Viewing against the light
> > one can discover that one printed brand crosses a patch and annother
> > patch is "brand clean". So I expect that a dark base brings in more
> > even patch readings than a bright one.
> > 
> > Best,
> > Peter
> > 
> 
> Just a question here but .. if the brand shows through the paper
> enough that the patch reader can detect a difference between a "clean"
> patch and a branded patch .... does it mar your picture unless it also
> is mounted on a dark substrate?
> 
> If you were trying to be as accurate as possible the reading should
> technicaly be done on the mounting substrate.  Any difference less
> than one delta E is by definition going to be extremely difficult to
> see for the average person.
>