automate unpurple? -Reply

LAVINA VELASCO (mailto:LVELASCO@JHUCCP.ORG)
Thu, 13 May 1999 09:01:48 -0400

Message-Id: <199905131314.GAA23040@dns.ccit.arizona.edu>
Date:         Thu, 13 May 1999 09:01:48 -0400
From: LAVINA VELASCO <mailto:LVELASCO@JHUCCP.ORG>
Subject:      automate unpurple? -Reply
To: mailto:IMAGELIB@LISTSERV.ARIZONA.EDU

The Graphic Artist in my office suggested that you go to
Image>Adjust>Variations and click on the yellow and green to
remove blue and red from the surface color until the purple is
gone. You can do this with midtones and shadows until you are
pleased with the color.  If all the slides have about the same
amount of purple, you can do a macro to perform the same
variations over and over. However, this is only one way to do it.
You may also want to go to the Kodak web site to check their
FAQs.
Lavina Velasco
Photo Librarian
Media/Materials Clearinghouse

>>> William Allen <mailto:wallen@AZTEC.ASTATE.EDU> 05/12/99
01:51pm >>> My department is still in the early stages of digitizing its art slide collection. We have a large number of older color slides that have turned purple with age. Does anybody know of a set of defined functions in Adobe PhotoShop5 to bring these images back to a semblance of their original color? I guess I'm really asking, do we know what color(s) is lost (or gained) in the aging process of the average 1950's Kodak slide. If we knew that then it ought to be possible to set up a macro in PhotoShop to automate the unpurpling process.

Thanks. wa

William Allen mailto:wallen@aztec.astate.edu http://www.clt.astate.edu/wallen