February 2006 Alt-Photo-Process-L: Fwd: spectral sensitivity of

From: Ender100@aol.com
Date: 02/21/06-03:07:05 PM Z
Message-id: <216.12fb6339.312cdaf9@aol.com>

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Date: Tue, 21 Feb 2006 16:02:42 EST
From: Ender100@aol.com
Subject: Re: spectral sensitivity of platinum/palladium and cyanotype coatings.
To: alt-photo-process-l@sask.usask.ca
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Hi Sandy,

That density problem with the 2200 is easily fixed using Ink Configuration t=
o=20
bump the amount of ink laid down=E2=80=94as long as you keep it at +15 or be=
low.

Best Wishes,
Mark I. Nelson
www.MarkINelsonPhoto.com
www.PrecisionDigitalNegatives.com
PDNPrint Forum @ Yahoo Groups

In a message dated 2/21/06 10:42:50 AM, sanking@CLEMSON.EDU writes:

> I also found that it was not possible to get quite enough density for
> printing processes such as VDB and salted paper using just the color
> inks of the PDN system with the Epson 2200 so I developed, in
> corporation with some other folks, a Blend-a-Palette which allows one
> to blend in Black ink with the other colors as necessary to create a
> DR as required by the exposure scale of the process. People who use
> PDN and=C2=A0 who know Photoshop can figure out how to do this pretty
> quickly.
>=20
> I do find that the negative contrast as read with a UV densitometer
> is quite close to actual printing density, at least with the Epson
> 2200, so if you know the exposure scale of your process, and have a
> UV densitometer, using the blend palette allows one to determine the
> best color mix very quickly, and it is also very accurate.
>=20
> Sandy
>=20

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<HTML><HTML>Hi Sandy, 
 
That density problem with the 2200 is easily fixed using Ink Configur=
ation to bump the amount of ink laid down=E2=80=94as long as you keep=
it at +15 or below. 
 
Best Wishes, 
Mark I. Nelson 
www.MarkINelsonPhoto.com 
www.PrecisionDigitalNegatives.com 
PDNPrint Forum @ Yahoo Groups 
 
In a message dated 2/21/06 10:42:50 AM, sanking@CLEMSON.EDU writes:<B=
R>
 
 
<BLOCKQUOTE CITE STYLE=3D"BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT=
: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px" TYPE=3D"CITE"><FO=
NT COLOR=3D"#000000" FACE=3D"Geneva" FAMILY=3D"SANSSERIF" SIZE=3D"2">=
I also found that it was not possible to get quite enough density for=
 
printing processes such as VDB and salted paper using just the color<=
BR>
inks of the PDN system with the Epson 2200 so I developed, in 
corporation with some other folks, a Blend-a-Palette which allows one=
 
to blend in Black ink with the other colors as necessary to create a<=
BR>
DR as required by the exposure scale of the process. People who use<B=
R>
PDN and=C2=A0 who know Photoshop can figure out how to do this pretty=
 
quickly. 
 
I do find that the negative contrast as read with a UV densitometer<B=
R>
is quite close to actual printing density, at least with the Epson<BR=
>
2200, so if you know the exposure scale of your process, and have a<B=
R>
UV densitometer, using the blend palette allows one to determine the<=
BR>
best color mix very quickly, and it is also very accurate. 
 
Sandy 
</BLOCKQUOTE> 
 
 
 
 
 
 
</HTML>

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Received on Tue Feb 21 15:07:25 2006

Fwd: spectral sensitivity of platinum/palladium and cyanotype coatings.