Photonics Dictionary: P

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photographic film x

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panchromatic photographic film

Black and white film that has a wavelength sensitivity similar to that of the eye.

photoelectric densitometer -> densitometer

1. An instrument used to measure the opacity or density of dyes, pigments or dispersed particles that form an image in or on a medium, such as a photographic film. 2. A device used to measure the...

photographic field

The maximum angle of view that can be recorded by a camera. Field is a function of lens focal length and film format.

photographic resolution

A measure of the ability of a photographic system to record fine detail. Usually stated in terms of cycles per millimeter on the processed film.

photographic sensitometer -> sensitometer

An instrument for determining the sensitivity of a photographic film to light. The film is given either a stepped exposure or a continuously varied exposure; after processing, the density is measured...

photographic sound recorder

A system in which the electrical signal embedded within an audio input signal is converted to a modulated light pattern and recorded on film.

photographic thermometry

The photographic recording of the heat radiation emitted from various points on the object as corresponding density variations on fast infrared film.

pinhole camera

A lensless photographic camera that uses a small sharp-edged hole as its aperture. The light passed by this aperture onto the camera's film plane produces a soft-edged image that has a wide field of...

process camera

A photographic camera designed to produce reproduction film of visual information (pictures, line drawings, graphs) for printing purposes.

Photonics DictionaryP

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