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Re: Scanning glass negatives



Title: Re: Scanning glass negatives
Paul Dunkel
Hudson Microimaging
914-338-2200
<hudimaging@aol.com>

Dear Stephen,

We have scanned many glass plate neg's.  The best way is to use a scanner that has a "transparency" draw such as the Agfa. This draw comes with modern size inserts for todays photography.  You can have a insert made to fit your glass plates, one for each plate size.
8 x 10 plates will only fit one per draw insert , other sizes can have multiple plate holders.  The distance from the top of the draw to the scan focal must be repeated by measuring the "modern" insert.
This method allows you to:

scan with no glass on glass ( a must or scratching of emulsion, breakage of warped platres and         
         moire can occur)

In Photoshop you can batch scan and use "actions" to help automate some ot the repetitous steps.

Don't forget to clean the NON emulsion side ( I use Kensington  Surface Guardian towels from Staples.
They are an alcohol wipe that is perfect to clean with because it is not too wet).

Call me if I can help you any further.


Paul Dunkel
Hudson Microimaging
914-338-2200
hudimaging@aol.com








----------
From: Steven Phalen <Steven.Phalen@ASU.EDU>
To: ARCHIVES@LISTSERV.MUOHIO.EDU
Subject: Scanning glass negatives
Date: Mon, Jun 5, 2000, 12:58 PM



Hello,
I'm wondering if someone might have some advice for scanning glass plate negatives.  I'm wary of the glass-on-glass contact, so how can this be done effectively without scratches either to the scanner glass or the plates?  Thought of mylar between but am concerned about the "moire"(sp?) effect.  

Also, I imagine that for quality reasons the emulsion should go down due to the thickness of the glass.

Any advice here is greatly appreciated!   
(Please copy me on replies since I don't subscribe to the list at this time)

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      Steven L. Phalen
      Library Specialist Senior     
      Dept. of Archives & Manuscripts       
      Arizona State University

      Phone:(480)965-2544; Fax:(480)965-9169        
      E-mail:thirteen@mainex1.asu.edu

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~