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Backs for the Pentax K-Mount Bodies

Bulk Film Backs

For extended time-lapse photography, laboratory work or fast-action photography Pentax designed two bulk film backs: for the LX and for the MX. Also available are a film cartridge and a cartridge loader. The older models designed for the Spotmatics fit also on the K-bodies.

Data Backs

Data backs were used on analog bodies for imprinting date, time or other information on the film during exposure.