Analog photography is a term for photography using a progressively changing recording medium, which may be based either on a chemical process (e.g., photographic film or plate) or electronic means (e.g., using a vidicon or CCD sensor).
In a film camera using the gelatin-silver process, light falling upon photographic emulsions containing silver halides is recorded as a latent image. The latent image is subjected to photographic processing, which makes it visible and insensitive to light.
In a video camera or digital still camera, the signal is captured with a video camera tube or charge coupled device sensor, which sends the picture to be processed by the camera's electronics. The signal can be transmitted or recorded on a storage device for later playback.
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