Food Code Lighting Requirements The first requirement specifies providing at least 110 lux (10-ft. candles) at a distance of 75 cm (30 inches) above the floor, in walk-in refrigeration units and dry food storage areas and in other areas and rooms during periods of cleaning.
The best way to shoot a picture would be to have it center screen. You can look through your viewer as well as long as your subject is the main focus in the middle.
