Which process involves wax paper coated with silver iodide?

The process that involves wax paper coated with silver iodide is the Calotype, also known as the Talbotype. This photographic process, developed by William Henry Fox Talbot in the 1830s, utilizes a paper negative that is sensitized with silver iodide in a waxed paper format. The wax coating made the paper translucent, allowing for better exposure to light and enhancing the image quality.

In this technique, once the paper is coated and exposed, it goes through development and fixing processes, resulting in a negative image that can then be used to make positive prints. The use of wax paper not only facilitated a finer quality but also allowed for a more flexible approach to printing, which distinguished the Calotype from earlier techniques like the daguerreotype, which produced only a single image without a negative.

The other processes listed do not utilize wax paper or silver iodide in the same fundamental way. DSLR refers to digital photography methods, Emulsion Plates typically involve glass plates with emulsion rather than waxed paper, and the Ambrotype uses glass plates that are coated with collodion, which differs significantly from the materials and methodology of the Calotype process.