Pictures are very helpful tools to understand what happened in many types of cases. But are you missing part of the picture?
When a case arrives with photographs, I often receive only printed copies or, worse, copies printed in black and white to pdf. I can see most of what the photograph depicts, but I want the original jpg for a variety of reasons. First, the digital file often provides higher resolution than the printed copies and makes viewing much easier.
Second, I want the metadata. Whether taken by a professional camera or a cell phone, the files themselves contain information about what happened when the photograph was taken. If taken on a cell phone, the file will often have information about the exact location where the phone was when the picture was taken. Sometimes even the phone’s altitude will be recorded.
You can feed this longitude and latitude information into a mapping website to visualize where the camera was. Or you can upload the file to this website and it will do the work for you. Either way, you now have information that would never have been available from the printed copy.