The key purpose of crime scene photography is to document the crime scene and all its evidence in detail, capturing what is present and the spatial relationships at the scene. This visual documentation helps investigators recreate the scene, preserve evidence as it was found, and provides a reliable, objective record for analysis and use in court proceedings.

Crime scene photography aims not just to capture obvious evidence but also seemingly unrelated aspects to potentially uncover links important to the investigation. Photographs are taken from various ranges (long, medium, close) and include all relevant features, helping tell a logical story about the crime for investigators and legal professionals.

In summary, crime scene photography serves to permanently preserve a visual record of the scene, aid in investigative reconstruction, and support truth- seeking through detailed and unbiased imagery.