Perhaps the most common form of evidence collected at crime scenes is fingerprints. Since the subject matter in the photograph is almost all white, the meter will provide exposure settings that result in an underexposed photograph. Images taken during the exercise will be presented to the class for review and critique.

When taking close–up photographs of bloodstains be sure to place a scale on the same plane as the bloodstain. Position your electronic flash at the best angles for the photographs. When crimes occur, there is always an investigation. When a tool mark is collected it is possible that a positive identification can be made linking a tool to the crime. Reviewed in the United States on December 27, 2014. Evidence Photography — At the Crime Scene  Copyright: © 2014 by Steven Staggs. To darken a color, the opposite color filter is used. Documenting crime scenes, collection and preservation of evidence, articles, forum, videos, resources. There may be times where it is not possible to show the exact location of an impression with photographs. They can sometimes be detected by shining a strong light source at low oblique angles across surfaces such as floors, doors (e.g., suspect kicked open a door) and victims’ bodies (e.g., victim was stomped to death). He is the President of Crime Scene Resources, Inc. and Webmaster of the Crime Scene Investigator Network, the world's most popular Crime Scene Investigation and Forensic Science website. Please try again. As you move the lighting you will see the results you will get by looking into your viewfinder. It may be used by law enforcement officers, investigators, crime scene technicians, and forensic scientists. When photographing a bullet path illustrated with a laser you will need a camera with “B” setting, a lens with f/1.8 or larger aperture, a locking cable release, a tripod, an electronic flash, a roll of ISO 400 color print film, and laser. The photographs may also be used in interrogations, and in the courtroom, to provide the judge and jury with evidence of what the scene looked like. There is considerable overlap among identifications, but evidence can be categorized into the following broad groups based on its origin, composition, or method of creation: Underexposing the film will separate the steps on the white end of the gray scale. To take a close–up photograph of an impression, place the camera on a tripod and position the camera so the camera's film plane is parallel with the impression.

However, colored filters can be used to increase contrast between colors in black–and–white photographs. This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License which permits unrestricted noncommercial use, distribution, and reproduction, provided the original work is properly cited and not changed in any way. Adjust the lens aperture to underexpose the photograph by one or two f–stops. The void pattern is an area without bloodstain. Sold by apex_media and ships from Amazon Fulfillment.