Data Back MF-14
This is by far the most popular Databack for the F3 camera. Used with all Nikon F3-series cameras, this interchangeable camera back comes with quartz-controlled clock and LCD to display time, date or sequential numbers from -2 to 2000, and lets you imprint this data in the lower right-hand corner of your photos if desired. Imprinting data function include Year/month/day Day/Hour/Minute or reference numbers to 2000 (only one option is selectable at a time). A built-in alarm makes it very handy for travel. For snap shooters, scientists or anyone with the desire to create lasting memories. Operations of the MF-14 can’t be easier, just select the mode (Three in sequence) and press select to go to the respective number you wish to change, after completion, just press the mode button. You can cancel the print mode just by pressing the ‘Print’ button once (Activate by pressing it one more time and the flashing icon for ‘print’ will keep flash on the LCD panel). Oh.. it is powered by 2 X LR44 button cells at the palm rest which can be easily removed by a coin.
Specifications for MF-14 Databack:
Usable cameras: Nikon F3 series (Except Nikon F3 High Speed Motor Drive camera when used in combination with the MD-4H as imprinted data becomes blurred, standalone F3H camera is alright)
Usable Film Speeds: ISO25-400 for colour film, 100-400 for B/W.
Data Imprinting Type: 7 segment, 6 digit LEDs;
Data Display: 7 segment, 6 digit LCD
Imprinting Data: Year/Month/Day; Day, Hour/Minute; Frame Counter or any number from -2 to 2000
Imprint Signal: Via direct contact through camera body
Clock: Quartz Controlled, 24 hour type; date and time can be automatically programmed and adjust for leap years
Alarm: Audible alarm continues 20 sec at preset time
Motor Drive Compatibility: MD-4 (Except MD-4H)
Power Source: Two 1.55 Silver Oxide Cells
Dimensions & Weight: W x H x D 148.5mm x 53.5mm x 26mm; 85g (Without batteries)