Here are my very first ambrotypes ever! Not exactly a great success… I seem to need some more practise in pouring collodion ðŸ˜‰ …
The images look somewhat low in contrast, there may be several reasons for this:
- light leaks in the camera (had a hard time removing & inserting the plate holder’s dark slide — the moisture from the dripping plate must have softened it somehow… while twitching it I may have enabled some light leak… the conclusion is that my wooden plate holder will not be good for this, I guess I’ll need to make another one from a modern aluminium/plastic holder)
- my chemistry and/or developing technique
The images here were shot with a Tachihara 8×10″ camera and a simple home-made f:6,7/400 mm lens. The lighting was with a Ianebeam 2000W halogen lamp.
Collodion, solution approx. 4%, USP (Sharlab).
Iodizer, 3g cadmium bromide + 4g potassium iodide dissolved in 6ml distilled water — this mixture was added to a solution of 120ml Sinol (denatured alcohol) + 120 ml ether.
Working collodion (for pouring onto plate), Sharlab collodion + iodizer, 1:1.
The silver bath (for sensitizing the plate), 90g silver nitrate to 1000ml distilled water.
The developer, 15g ferrous sulfate + 14ml acetic acid + 18ml Sinol to 355ml distilled water.
The fixer, sodium thiosulfate, 20% solution.
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