007–Microform Dialog Box

The 007–Microform dialog box is used to insert special information about the physical characteristics of the microform. The 007 Microform dialog box is displayed when you double-click the 007 tag in the MARC Editor and the first position of the fixed field contains ‘h’.

Select from the options in the following boxes to enter data in the 007 tag for a microform:

Category of material - Indicates the category of material to which the item belongs. The meaning of the remaining character positions in field 007 depends on the value in this character position.

Specific material designation - Indicates the specific material designation of the item. The specific material designation describes the special class of material (usually the class of physical object) to which an item belongs.

Positive/negative aspect - Indicates the positive/negative aspect (polarity) of the item.

Dimensions - Indicates the dimensions of the microform. It does not indicate the dimensions of the image. For example, 16 mm images on 35 mm microfilm are coded f (35 mm). Only the most common dimensions are indicated.

Reduction ratio range - Indicates the reduction ratio range for a microform. The specific reduction ratio is recorded in 007/06-08.

Reduction ratio - These character positions contain the reduction ratio for a microform. A one-character alphabetic code indicating the reduction ratio range is recorded in 007/05.

Color - Indicates the color characteristics of the item.

Emulsion on film - Indicates the type of emulsion on the film. The word emulsion describes the light-sensitive materials within the item. Proper storage and use of items require identification of the emulsion they contain.

Generation - Indicates the generation stage of the item. The concept of generation represents the photographic process required to create, duplicate, and preserve image materials.

Base of film - Indicates the base of the film. Safety base is a comparatively nonflammable film base that meets the American National Standards Institute (ANSI) requirements for a safety base.