Photo Imaging Evidence

6101 Unique Visitors
11762 Page-views

Forensic photography is used to document crime and accident sites as well as offer visual exhibits for judicial cases. Photographs taken at crime scenes are used to preserve forensic evidence so that investigators can revisit situations that have been processed and are no longer available. By disclosing information that establish who committed crimes and how, forensic pictures can aid in the legal settlement of both recent and cold cases. Photographs were first employed to capture evidence of crimes and for other legal purposes soon after cameras were introduced. Jacques Daguerre, a pioneer in photographic technology, snapped a shot in 1839 that showed a spouse’s adultery in a French divorce case. Police in Paris, France, began photographing captured offenders a few years later. Since then, forensic images have been used to document a variety of crimes, such as theft, assault, and document fraud. The 1959 quadruple murders, the subject of Truman Capote’s book In Cold Blood (1966), are a prominent example of a forensic photography-aided investigation: Detectives utilized a shoe print discovered by Kansas investigator Harold Nye’s images of the crime scene to identify a suspect who was eventually convicted.
Procedures and Strategies
Specially experienced photographers use their talents and camera equipment to record critical information at crime or accident sites on digital storage devices or black and white or colour film, depending on how quickly the investigators need photographs. In addition to forensic photographers, a variety of law enforcement officers carry cameras and use forensic photography as part of their work. Investigators can use photography to record photos of big items of evidence that can’t be removed from crime or accident sites, as well as to quickly document temporary or fragile evidence like prints or trails that might be obliterated by weather. Adapting to a variety of scenarios, forensic photographers photograph wounds, skid marks, licence plates, and bulldozed building sites, among other things. Prior to capturing images at crime scenes, forensic photographers engage with law enforcement personnel on photography needs and assess the scene to determine lighting conditions and whether specific lenses, filters, or flashbulbs are required to increase photo clarity. Photographers film crime scenes during three stages of shooting, wearing protective clothing to avoid contaminating evidence and prioritising accuracy above aesthetics. To begin, they take overview shots of the sites from various orientations and wide angles, with each piece of evidence labelled with a numbered marker for legal reference. They then walk closer to specific pieces of evidence to capture midrange pictures that show where those items are and give them context. Finally, they take close-up images of specific pieces of evidence, using a ruler to mark size next to each item. In addition to shooting photographs, forensic photographers take notes, accumulating information about each image, such as the time it was taken. Forensic photographers who are aware of lighting and framing techniques can capture photographs of tyre treads, shattered glass around bullet holes, and other damage that would otherwise be covered. Luminol, infrared, and ultraviolet light sources are used by forensic photographers to disclose normally unseen evidence, such as dried blood and latent fingerprints, so that it can be photographed. Photomicrography, a laboratory method that combines the camera with the microscope, broadens the scope of forensic photography by providing greatly magnified photographs of evidence. When crime scenes span large areas or evidence is submerged, law enforcement officers value aerial and underwater photography for forensic purposes. In addition, the use of photography during police surveillance, when investigators watch and photograph people or places suspected of being involved in criminal activity, is included in the discipline of forensic photography. In police enforcement, video photography has a variety of applications. Forensic videography is commonly used to search crime scenes, and police officers may videotape suspects while interrogating them or documenting confessions. Still shots from videos and security cameras are regarded evidence, and photogrammetry is used to determine measurements in such forensic images.

Legal Applications
Photographs are frequently used by detectives to better understand what happened during a crime. When police investigators examine crime scene photographs, they occasionally notice facts that they were ignorant of at the time of the incident or only subsequently understood were crucial in conjunction with other evidence. Furthermore, investigators frequently use forensic pictures to confirm data described in reports. Photographs can also aid both detectives and witnesses in identifying suspects, especially when they capture crimes in process or perpetrators at crime scenes. When criminal suspects are apprehended, law enforcement authorities snap photos of them (known as mug shots) and store them in electronic databases of known and suspected offenders. Legal professionals develop forensic photographs for use in courtrooms, typically magnifying them; the objective of displaying such photos is frequently to emphasize the links between the suspects or evidence pictured and crimes. Photographs are frequently used by police to prove that certain vehicles and individuals were involved in traffic and parking violations. Photographs depicting injuries and damage to structures and cars sustained during crimes can support insurance claims and assist victims in obtaining compensation, in addition to being relevant in court. Many misconceptions concerning forensic photography have been perpetuated by false media portrayals, and some observers have claimed that juries sometimes have exaggerated expectations about the photos used in courtrooms. Experts in forensic photography strive to create photos that authentically depict crime scenes and evidence, are not manipulated, and do not reflect biases. Many legal issues have been decided by international, US, and state courts in which the issue was whether certain images were admissible evidence. The Scientific Working Group on Imaging Technologies of the Federal Bureau of Investigation has developed rules for the presentation of legally acceptable forensic images and films. The Evidence Photographers International Council (EPIC) is a non-profit organization that funds forensic photography training programmes and publishes the Journal of Evidence Photography. Classes for forensic photographers are offered by collegiate criminal justice programmes, as well as law enforcement and photography associations.