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AIIM MS26-1990, 35 mm Planetary Cameras (top-light)-Procedures for determining Illumination Uniformity of Microfilming Engineering drawings

This standard specifies the minimum test target elements and their criteria to be used in determining the uniformity of illumination on the copyboard of a 35 mm planetary camera. The layout of the test target and the procedure to be followed in obtaining a uniform density of microfilm images from a planetary camera are established to assist in the achievement of high quality first-generation silver-gelatin microfilm of engineering drawings.

This standard deals exclusively with top-light and does not address the use of back-light. Sufficient need exists for a test target and procedure for top-light filming to justify publication without waiting for the development of a test target and procedure for back-light filming.

The test target and procedure developed are designed to complement that of the camera manufacturer.

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