Camera Data Backs
A camera data back can record, store and imprint such information for your photos such as selected date and time information. It can record the year/month/day, month/day/year, day/hour/minute. It can also give you the shutter speed and aperture setting and it lets you control them on predetermined times and intervals, almost like programming a VCR.
The data back can replace your camera's back door and usually operates on batteries. The information can be used for tracking the progress of specific projects, preserving scientific data and for family records. On most models the data can be imprinted automatically in synchronization with exposure or you can do it manually. Make sure your data back is designed to fit and work with your model camera.