Traditional Culture Encyclopedia - Photography major - What is the working principle of photography in Daguerre?
What is the working principle of photography in Daguerre?
Daguerre photography is a direct positive method. Its basic method is to plate a layer of silver on a copper plate and fumigate it with iodine vapor to obtain a silver iodide photoreceptor. Then expose the silver iodide photoreceptor in a black box, fumigate and develop it with mercury vapor, and finally wash off the unexposed silver iodide with hypo solution to fix the image.
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