ABSTRACT

The purpose of evidence photo documentation is to provide a record of the appearance of physical evidence. The photographs may be used as part of the case record, as evidence in court, or by other investigators. It is crucial that photographs of evidence properly represent the appearance and condition of the evidence. It is also important that the quality of the images do not detract from the viewer's ability to visualize that appearance. Recent advances in forensic technology have greatly increased the sensitivity of evidence testing, especially that of DNA. The camera should be placed directly overhead of the evidence or as close as possible to avoid distortion. Reflective objects such as firearms, knives, car paint, glass, or mirrored surfaces present a unique challenge. To make documenting reflective objects easier, diffuse the light as much as possible. The lighting may be adjusted to provide the contrast necessary to emphasize the impression.