From: fb (aikus@freemail.c3.hu)
Date: 03/01/01-04:15:28 PM Z
Hi,
In the main age of the daguerreotype the mostly used type of plate was
the 40 quality signed one.
In this case the 1/40 part of the whole weight (mass) of the plate is silver
and the thickness of the plate (both layer together: silver and copper) 0.4 -
0.5 mm. Plates like this was useful with a metal sheet film holder of my
wooden camera casettes (wooden casettes originally for glass plates )
About the special literature that silver layer was enough thick for 2-3
times using a plate. (Wrong or unnecessary pictures was removed by
polishing before resensitisation. The number of reusability up to the
evenness and smoothness of layers and the overexposed/"developed"
picture is often unremovable at the highlights.)
Balint Flesch
archaist/conservation photographer
Budapest
Hungary
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Date sent: Thu, 01 Mar 2001 04:22:37 +0100 From:
Manuel Estébanez <MEC00001@teleline.es>
> Hi all:
>
> 1. I have a wood 5 x 7 sheet-film holder (Lisco cut film holder) and I want adapt it for Daguerreotype use. Any idea?
>
> 2. What's the ideal look of a plate (Copper) silvered for daguerreotype?. and the ideal silver thickness? .
> Any formula for calculate/control this ideal silver thickness during electroplating process?
> 3. I have a 5 x 7 wood view camera and I want to adapt a sheet film holder for daguerreotype use but,
> it is easy to make a simple daguerreotype camera?. I have a rack- pinion (Darlot lens). Any archive, link, etc.. about it?
>
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