Why are photographs essential at a crime scene?

Photographs are essential at a crime scene primarily to document the scene and evidence before any manipulation occurs. This documentation serves as a precise and permanent record of the scene in its original state, capturing details such as the position of objects, the overall layout, and any relevant environmental factors. These images are vital for preserving the integrity of the scene, as they provide an accurate reference for the investigation, help in reconstructing the events that transpired, and can be critical in court proceedings. This thorough documentation is crucial because once a crime scene is disturbed, important evidence may be altered, destroyed, or lost, making initial photographs invaluable for ensuring that a clear and detailed representation of the evidence is maintained throughout the investigative process.