NCJ Number
191130
Journal
Law Enforcement Technology Volume: 28 Issue: 9 Dated: September 2001 Pages: 82-84,86,88
Date Published
September 2001
Length
5 pages
Annotation
This article discusses evidence photography, digital imaging, and related equipment.
Abstract
Obtaining good quality close-up photography of evidence in the field requires the proper equipment and training. The camera equipment needed includes a macro lens, supplementary lenses, and extension tubes or a bellows. In addition to the right lens or lens accessory, a flash that can work off camera is needed to direct light and cast shadows. A tripod should be used for all photographs that will be the basis for measurements or comparisons; it enables tight composition, a steady platform, accurate focus, and exact repetitive scale for successive images made from that position. The article claims that, with the proper camera and correct use, digital cameras can do as credible a job as film cameras. Their advantage over 35 mm is the ability to view the image immediately. A good digital camera will provide enough detail for forensic examination if the prints are no bigger than 8x10. However, nothing can replace the quality of the silver image film when greatly enlarged. The article claims that evidence photographers are not getting the training they need, i.e., photo theory, lighting, exposure, depth of field, painting with light, night flash exposure, and arson photography as well as close-ups.