One of the dry plate holders was modified to take wet plates. The collodion was home made according to the instructions on Philip Aprosio's marvelous site.
This was the third of three exposures, the first was badly underexposed, the second almost there and this one was a successful exposure although a rather untidy plate
A half plate tintype made with the whole plate camera and the Dallmeyer 3B 'Patent Portrait' lens. An exposure of four seconds was given with the No.2 stop (about f6.4)
BDH collodion was used, salted with Bob Szabo's double collodion.
The silver bath was prepared according to the instructions given in Carey Lea's manual of 1868.
Sergeant Richard O'Sullivan of Co.F, 55th.Virginia Infantry Regiment
A half plate ferrotype
The collodion was made with nitrocellulose to Estabrooke's formula No.1 (The Ferrotype and How to Make It. Edward E. Estabrooke, page 111, edition of 1872)
Some of my results using Positive processes. Ambrotypes and Ferrotypes