RE: digital neg curve calculator

[Larry Roohr <lrryr@home.com>]

Hi Sandy,

All this does is take the densitometer measurements, sets the endpoints, and
interpolates between them to get the correct values for the transfer
function curve points at 0,5,10,20,....% to straighten out the response.
This is pretty simple to do it's just tedious, hence the spreadsheet. I'm
not sure what all Phil's program did.

Larry

-----Original Message-----
From: Sandy King [mailto:sanking@clemson.edu]
Sent: Saturday, August 25, 2001 9:19 AM
To: lrryr@home.com
Cc: alt-photo-process-l@skyway.usask.ca
Subject: Re: digital neg curve calculator



Larry,

Does this program work anything like the Plotter program of Phil
Davis. I have used the Plotter program for many years and it works
very well but it was designed with an antiquated program language and
the resolution of the print-outs is that of the old Apple dot-matrix
printers. I would like to find something that would allow me the same
features as Plotter but with more sophistication in printing.

Sandy King



>I put the excel spreadsheet for calculating photoshop transfer functions
>along with a step wedge to use with it on the web  for downloading at:
>
>http://members.home.net/lrryr/digitalnegs.html
>
>Directions are at the bottom of the spreadsheet.
>
>
>Larry