What is the first step in properly photographing a footwear impression at a crime scene?

The first step in properly photographing a footwear impression at a crime scene is to ensure that the camera is at a 90-degree angle to the impression. This angle is crucial because it helps to capture the impression in a way that minimizes distortion and provides the most accurate representation of the evidence. By photographing the impression directly from above, you are able to prevent perspective distortion, which can affect the measurement and analysis later on. This careful approach preserves the integrity of the impression and ensures that it can be used effectively in any potential investigations or trials.

While using a flash, adjusting the tripod, and placing a scale next to the print are important aspects of the photography process, they are secondary to ensuring the proper angle of the camera. Lighting conditions, stabilization, and scale representation all play important roles in enhancing the quality and clarity of the photograph, but without the correct angle, the primary detail of the footwear impression can be compromised. Hence, starting with the camera positioned correctly is essential in documenting evidence accurately.