Re: using a scanner as a densitometer?

Charles,

I have an Epson 4870 and I can't scan a step tablet at least not all of it
at the same time, to much density range. But for normal negative using
VueScan I get a direct measure of density. How accurate is it well I don't
know but you could use your transmission densitometer to verify and maybe
find a relation between the two.

Regards
Yves

PS. Vuescan is free to download and you could use it to make your measures
but you couldn't save a scan.

----- Original Message -----
From: "ryberg" <cryberg@comcast.net>
To: <alt-photo-process-l@sask.usask.ca>; <alt-photo-process-L@usask.ca>
Sent: Tuesday, February 21, 2006 12:27 PM
Subject: using a scanner as a densitometer?

> I've read a couple of casual mentions of using a scanner as a
densitometer.
> My Epson 3200 reads the density as my choice of 0 to 100% or 0 to 255
units.
> The only way I can think of to get a log density reading is to scan a step
> tablet as the same time I scan a negative and make comparison of the
> readouts. Is there another way?
> Charles Portland OR
Received on Tue Feb 21 12:38:37 2006