Techniques of obtaining photographs.
Photographs are the best means of preserving physical evidence for study and evaluation.
It is important that photographs be of good quality and composition. Self-developing photos will provide instant results in the event other films fail to develop properly or are lost. Color prints are preferable, if available, but not mandatory. A good technique is to request proof sheets from the photo lab. This service can usually be provided in one day and will help in determining if additional photos are necessary.