Analog photography is a commonly used term for photography that uses a progressively changing recording medium, which may be either chemical process based (e.g., photographic film or plate) or electronic (e.g., vidicon or CCD sensor).
In a film camera that uses 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.
Analog photography is frequently used as a title for those who are keen to work with, or do work with more traditional types of photography; dedicated online communities have been established in which like minded individuals together share and explore historic photographic practices. Analog photography has in fact become much more popular with younger generations who have become increasingly interested in the traditional photographic practice; sales in film based cameras began to soar and youth were seen to embrace some 19th century technology  Urban Outfitters, a popular clothing chain has picked up on the trend and now offers more than 60 product combinations relating to cameras most of which are film-based.
Polaroid used to be one of the most popular tools for analog instant photography, Facing the digital revolution, Polaroid stopped production of analog instant film in 2008. A company called Impossible Project acquired though Polaroid's production machines in order to produce new instant films for Vintage Polaroid cameras and to revive the analog Polaroid photography technique.