One would think that after too many robberies being photographed and so many unrecognizable photos taken during those robberies, owners of these establishments would smarten up and relocate their cameras to shoot straight on and not down from the ceilings. Smart robbers never look up.
They should also install camera decoys hidden at seven feet high on walls inside at the exit doors, photographing those that are exiting the business. It is here where they will get a clearer photograph of the thief exiting the business.
If they are going to the expense of installing a photo camera, they should add a few more dollars and buy a camera that is auto-telephoto for close up exposure.