Digital BW, The Print

Paul's step wedges from this fading trial are now posted in 
the "Files>Messages Related Files" section of the Group homepage:

http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint/files/Messa
ge%20Related%20Files/

(You may need to cut and paste the line so that all of it is in the 
address line of your browser.)

Martin Wesley

--- In DigitalBlackandWhiteThePrint@y..., "Paul Roark" 
<paul.roark@v...> wrote:
> In the latest fade test series, I put test strips of Piezo on 
Hahnemuhle
> German Etching, MIS VM (nc curve) on EAM, and an experimental 
variable-tone
> called VM X3 that prints with the same curves as MIS VM (nc curve).
> 
> I measured fading as a percentage of the starting value and warming 
as the
> change in the difference between the RGB red and blue channel 
measures.  The
> test strips were scanned into Photoshop with an Epson 1600, and the
> Histogram tool was used to make the measurements.
(snip)