Forensic Photography

I found some information on how they take the photos of the impressions they find at the crime scenes. They take lots of photos because it is cheap and very effective at recording info. When they find the print they usually take a photo up close, mid distance , and far away. Some states won't allow photos to be taken with anything else in the picture due to obstructing the view. But usually photos are take both with and without a ruler and a north indicator. Photos should be taken after every stage of the lifting process because lifting is dangerous and evidence must be obtained. They are usually taken at a 90 degree angle with a 45 degree angle flash to avoid distortion. Photographs help refresh investigators mind right before a court case and may reveal information that wasn't found before. Maybe ill include some of the photography in my speech.