From: Agustin (abarrutia@velocom.com.ar)
Date: 10/08/03-07:25:12 PM Z
"I discovered that it was necessary to underexpose the plate"
Just as you said, thatīs the point in ambrotypes. The emulsion is white, so
highlights (dense zones) will render white, and lowlight (faint thin zones)
let you see the black paper behind the glass plate. When you see the glass
plate of an antique ambrotype, you can see itīs actually an underexposed
negative image made of white emulsion.
You can try get an antique ambrotype, disamble it and see how it works. I
bought some for some bucks in antique stores (theyīll try to sell them as
daguerreotypes though).
Good luck!
Agustin Barrutia.
This archive was generated by hypermail 2.1.5 : 11/05/03-09:22:17 AM Z CST