Evidence Technician Exam

Capturing pattern evidence, such as tire tread marks or shoeprints, generally requires a coverage angle of 90 degrees. This degree of coverage allows for sufficient perspective and detail to be recorded, ensuring that the characteristics of the pattern are accurately documented. When photographing such evidence, the goal is to create a clear and complete representation of the impressions, which often necessitates a view that includes different angles to avoid distortion and to capture the full detail of the pattern's unique features.

Using just 90 degrees allows the photographer to produce a well-framed image that retains the necessary information without introducing excessive distortion that could occur with wider angles. This ensures the integrity of the documentation, which is critical for evidence analysis and presentation in a court setting.

Wider angles, like 180 or 360 degrees, may introduce issues with perspective or detail loss, making them less effective for capturing the precise characteristics of the evidence. Narrower angles, such as 45 degrees, would be insufficient to capture the overall pattern accurately, limiting the comprehensiveness of the documentation needed for forensic purposes.