Re: ortho film

    Ortho means orthochromatic while litho means lithographic. In general,
    ortho and litho are different, with ortho just meaning a film not sensitive
    to red while litho is a very high contrast film, usually requiring a
    special developer. Kodalith Ortho was both ortho and litho, while Kodalith
    Pan was litho but not ortho. Ilford Ortho+ is ortho but not litho. Is
    that confusing enough? :-)

    Kodalith is a very high contrast film that is either black or clear and has
    no gray tones at all. It's just the thing for making zone plates. I think
    Contrast Process Ortho is a high contrast film, but not as great as
    Kodalith, and does not require the special Kodalith developer. A bit of
    info on Contrast Process Ortho 4154 is at:

    http://www.kodak.com/cluster/global/en/professional/support/techPubs/f2/f2.shtml

Return-Path: <BHarper@glencore.co.uk>
Delivered-To: pinhole-discussion@pairlist.net
Received: from vala.pair.com (vala.pair.com [209.68.1.127])
        by pairlist.net (Postfix) with ESMTP id 766833C196
        for <pinhole-discussion@lists.pinhole.com>; Thu, 24 Aug 2000 12:01:29 -0400 (EDT)
Received: from mailer1.london.glencore.com ([212.36.157.69]) by vala.pair.com (8.9.1/8.6.12) with ESMTP id MAA29584 for <pinhole-discussion@pinhole.com>; Thu, 24 Aug 2000 12:01:28 -0400 (EDT)
X-Envelope-To: <pinhole-discussion@pinhole.com>
Received: from aristotle.london.glencore.com (unverified) by mailer1.london.glencore.com
 (Content Technologies SMTPRS 4.1.5) with SMTP id <Tacc8000416f4e3a3e0357@mailer1.london.glencore.com> for <pinhole-discussion@pinhole.com>;
 Thu, 24 Aug 2000 17:03:11 +0100
Received: by aristotle.london.glencore.com(Lotus SMTP MTA v4.6.7 (934.1 12-30-1999)) id 00256945.005D7AE8 ; Thu, 24 Aug 2000 17:01:03 +0000
X-Lotus-FromDomain: GLENCORE
From: "Brigitte Harper" <BHarper@glencore.co.uk>
To: pinhole-discussion@pinhole.com
Message-ID: <00256945.005D78F4.00@aristotle.london.glencore.com>
Date: Thu, 24 Aug 2000 17:00:06 +0100
Mime-Version: 1.0
Content-type: text/plain; charset=us-ascii
Content-Disposition: inline
Reply-To: pinhole-discussion@pinhole.com
Subject: [pinhole-discussion] Testing new list only!
Sender: pinhole-discussion-admin@pinhole.com
Errors-To: pinhole-discussion-admin@pinhole.com
X-BeenThere: pinhole-discussion@pinhole.com
X-Mailman-Version: 1.2 (experimental)
Precedence: bulk
List-Id: Pinhole Photography Discussion List <pinhole-discussion.pinhole.com>

Just testing.
Regards,
Brigitte.

STRICTLY CONFIDENTIAL. The contents of this email and any attachments are strictly confidential and they may not be used or disclosed by someone who is not a named recipient.
If you have received this email in error please notify the sender by replying to this email inserting the word "misdirected" as the message.
Received on Thu Aug 24 16:33:12 2000