Software application or development in optical image digital data processing requires a fast, good quality, yet inexpensive hard copy of processed images. To achieve this, a Cambo camera with an ƒ 2.8/150-mm Xenotar lens in a Copal shutter having a Graflok back for 4 × 5 Polaroid type 57 pack-film has been interfaced to an existing Adage, AGT-30/Electro-Mechanical, EMR 6050 graphic computer system. Time-lapse photography in conjunction with a log to linear voltage transformation has resulted in an interactive system capable of producing a hard copy in 54 sec (Fig. 1). The interactive aspect of the system lies in a Tektronix 4002 graphic computer terminal and its associated hard copy unit (Fig. 2).

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