Where are microfilm images recorded?

The microfilm images are recorded in the emulsion layer of the microfilm. Fading: The loss in density of photographic images File format: Set of structural conventions that define a wrapper, formatted data, and embedded metadata, and that can be followed to represent images, audiovisual waveforms, texts, etc., in a digital object.

What are the features of a microfilmed image?

Rotation: Images on film can be placed sideways or upside down. Rotation is the act of turning the image 90°, 180°, or 270° so that the image can be easily viewed and read. Sharpening: This is a filter that will increase the sharpness of microfilmed images. Images that were originally filmed out of focus can be blurry or fuzzy.

How many images are in a roll of microfilm?

The thickness of the microfilm determines the strength and the number of images on each roll. A 16mm, 215 foot, 2.5 mil roll of microfilm contains about 5,000 images. A standard 16mm 5 mil, 100 foot roll contains 2000-2500 images. A standard 100 foot, 35mm roll film is 5 mils thick and records up to 1,000 images.

What should a local government consider when starting a microfilming project?

When beginning a microfilming project, the local government should be aware that the quality of the end product will often be determined by the amount and quality of time spent supervising a project. Quality control not only includes the technical issues of resolution, density and reduction ratio but extends to every aspect of the project.

Is polyester based microfilm a low preservation risk?

Polyester-based microfilm is a low preservation risk. The paper card on which the microfilm is mounted will deteriorate differently depending on the type of paper used. Common Size(s) 7 ⅜" × 3 ¼" card containing one frame of a 35mm microfilm or several frames of a 16mm film. Background

What is a microfilmed record?

Often, microfilmed records are submitted for use in legal or administrative proceedings in place of original records. When this takes place the certification of the information on the film should establish that the records were filmed during the regular course of business.