Abstract
New camera systems, utilizing lenses of high numerical aperture and concomitant shallow depth of focus, require thin recording media. A number of materials potentially fulfilling this requirement are discussed. These include photoresist-coated metal or semitransparent masks, some unconventional photographic processes, and dyed photographic emulsions. The use of dyed photographic emulsions is recommended on the basis of sensitivity and improved resolution and modulation of the recorded image.
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