Chapter 14
Photographic Emulsions, Films, and Papers
Photograph by Josh Shagam, Biomedical Photographic Communications student, Rochester Institute of Technology.
Photographic Emulsions
A photographic emulsion consists of silver halide crystals suspended in gelatin. The emulsion is usually coated on a support that may be clear, as in the case of negative films, or opaque, as for photographic prints. The emulsion has the most significant controlling effect on the photographic and physical properties of the final product.
To visualize the emulsion, think of a chocolate candy bar with peanuts imbedded in it as shown in Figure 14 1. The peanuts ...
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