February 2006 Alt-Photo-Process-L: Fwd: using a scanner as a den

From: Ender100@aol.com
Date: 02/22/06-02:17:12 PM Z
Message-id: <265.631af0e.312e20c8@aol.com>

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Date: Wed, 22 Feb 2006 15:16:02 EST
From: Ender100@aol.com
Subject: Re: using a scanner as a densitometer?
To: alt-photo-process-l@sask.usask.ca
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Liam,

I was talking about using the scanner as a reflection densitometer=E2=80=94t=
he=20
reflection steptablet from stouffer is 21 steps at log .10 per step for a ma=
x=20
reflection density of 2.0.

You can do the same thing I described with a transmission step tablet and us=
e=20
your scanner as a transmission densitometer=E2=80=94and yes, the Stouffer 21=
step is=20
log .15 per step. =20

(by the way, I prefer the 31 step transmission =E2=80=94 and especially the=20=
pretty=20
one I designed available at www.PrecisionDigitalNegatives.com=C2=A0=E2=80=
=94 Stouffer makes=20
them for me.)

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

In a message dated 2/22/06 2:12:07 PM, lawless@bulldoghome.com writes:

> Mark,
>=20
> Doesn't the Stouffer have 21 steps?=C2=A0 Each step 0.15, give or take a b=
it, and=20
> B+F around 0.05, should make the top step 3.05.=C2=A0 Or are you talking a=
bout=20
> some other Stouffer?
>=20
>=20
>=20
> Liam
>=20

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<HTML><HTML>Liam, 
 
I was talking about using the scanner as a reflection densitometer=
=E2=80=94the reflection steptablet from stouffer is 21 steps at log .=
10 per step for a max reflection density of 2.0. 
 
You can do the same thing I described with a transmission step tablet=
and use your scanner as a transmission densitometer=E2=80=94and yes,=
the Stouffer 21 step is log .15 per step.  
 
(by the way, I prefer the 31 step transmission =E2=80=94 and especial=
ly the pretty one I designed available at www.PrecisionDigitalNegativ=
es.com=C2=A0=E2=80=94 Stouffer makes them for me.) 
 
Mark I. Nelson 
www.MarkINelsonPhoto.com 
www.PrecisionDigitalNegatives.com 
PDNPrint Forum @ Yahoo Groups 
 
In a message dated 2/22/06 2:12:07 PM, lawless@bulldoghome.com writes=
: 
 
 
<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">=
Mark, 
 
Doesn't the Stouffer have 21 steps?=C2=A0 Each step 0.15, give or tak=
e a bit, and B+F around 0.05, should make the top step 3.05.=C2=A0 Or=
are you talking about some other Stouffer? 
 
 
 
Liam 
</BLOCKQUOTE> 
 
 
 
 
 
 
</HTML>

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Received on Wed Feb 22 14:17:40 2006

Fwd: using a scanner as a densitometer?