This magazine for type 100 instant film is extremely useful for quickly checking exposure, lighting, and composition. The magazine is attached and removed as easily as the standard magazines.  Detachable film magazines allow the photographer to exchange exposed film for unexposed in seconds, or change between film types, lengths, and formats without losing a single frame.

Carrying extra, pre-loaded film magazines effectively increase your readiness and efficiency, in the studio or in the field.  Film magazines also broaden the scope of H cameras allowing them to tackle areas where digital backs are not always suitable; specialist films for scientific or other applications, long exposures, night photography etc.