Digital BW, The Print

Will,

I didn't think to dark store identical copies. What I did do though 
is cover portions of each print with opaque black cardboard. Lifting 
the cardboard should show any fading between the covered and open 
portions.

Les

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, will gibson 
<will@...> wrote:
>
> 
> Les,
> 
> One thing you should do (or have done at the time you printed the 
window 
> prints) is to print exact replicates and put them in dark storage. 
Then 
> you can tell if indeed the window prints are fading at all or 
perhaps 
> just fading equally if you can't discern a visual difference 
between them.
> 
> Will Gibson
> 
> lestihor wrote:
> 
> > I am carrying out a home-brew test of Nanochrome ink. I have 
taped two
> > prints on a window in full sun, both printed on my Epson 2200, 
both on
> > Pictorico Gallery Glossy paper, one using OEM ink and the other 
using
> > Nanochrome ink. I know this isn't very scientific, but it should
> > answer the question, "Is Nanochrome dye/resin ink more, less or 
equal
> > in light fading to Epson OEM pigment ink?"
> >
> > The prints have been in the window for a week and neither are 
showing
> > any discernable fading along the edge of black cover cards. Has 
anyone
> > tried this sort of test? How long can I expect to leave the 
prints in
> > the window before I see some fading in one or both prints?
> >
> > Les