“Improperly Photographed Impressions”.

"[...] Improperly Photographed Impressions: If the examination involves a photographed tire impression, many things can affect the dimensional accuracy of that photograph. If the camera’s film plane (back) is not perfectly parallel to the impression, then the photograph will have a perspective problem that can affect the ability to accurately enlarge the photograph of the [...]

Forensic Tracking.

"[...] Footwear and tire track evidence can be essential to your case, but it’s often overlooked. In some cases, CSIs identify the evidence but assume they can’t do anything with it. Weather extremes and difficult surfaces can make casting very challenging, but that doesn’t mean it’s impossible. In this two part series, I’ll first review [...]