Specifications

Camera Compatibility :		Nikon F3
Shooting modes		Choice of single-frame (S) or continuous (C) firing via S-C mode selector; lock (L) position also provided
Driving mode:		Holding Trigger button depressed completes the film-advancing, as well as the shutter releasing, when S mode applied.Shutter release button of the camera shoots the motor drive on the single frame operation.
Shutter release		By electromagnetic trigger button; also switches on camera meter when depressed halfway; meter remains on for 16 secs. after finger is lifted off button
Number of frames available:		36 frames(max.)
Usable shutter speeds:		On S mode 8 - 1/2000 sec. plus B On C mode 8 - 1/2000 sec. 5.5 fps. 1/250 - 1/2000 sec. 4 fps. /125 - 1/2000 sec.
Trigger button:		Depressing Trigger button half-way starts exposure metering.
Mode selector:		S (Single frame), C (Continuous) and L (Lock)
Remote control:		Possible; fitted with remote control terminal. Radio control set, modulite remote control set and intervalometer are available
Magazine back:		Available 250 exposures MF-4.
Power source:		Manganese battery (type AA) x 8 NiCd battery (exclusively made to be installed in the MD-4) MN-2 * External source is available.** MD-4
Firing rate		Up to 6 frames per second (fps) with NiCd Battery Unit MN-2, up to 4 fps with 8 penlight AA-type batteries; firing rates decrease at shutter speeds slower than 1/125 sec.
Automatic winding stop		Motor shuts off at film's end with LED indication; frame counter also provided to automatically stop film winding after preset number of exposures—useful in very low temperatures
Number of 36-exp. rolls per fresh battery		Guaranteed firing rate: approx. 60 with all types of batteries; slower firing rates, but still usable: approx. 70 with NiCd Battery Unit MN-2, approx. 100 with zinc-carbon batteries; approx. 140 rolls with alkaline - manganese batteries
Automatic film rewind		4.5 secs. with NiCd Battery Unit MN-2 and 8 secs with AA-type penlight batteries for 36 exposure film; automatic film rewind stop with optional MF-6 Camera Back
Shutter speeds		8 to 1/2000 sec. including "X" ( 1/80 sec. )
Dimensions		146.4mm (W) x 114.7mm (H) x 70.7mm (D)
Weight		480g

Power source	Voltage	Frames per second (fps) max.
		with mirror action	mirror locked-up
Manganese battery (type AA) x 8	12 V	3.8 approx.	4.0 approx.
NiCd battery unit MN-2	16.8 V	5.5 approx.	6.0 approx.
AC-DC Converter	>20V	5.0 fps (min)	5.4 fps @ 1/250 sec

Number of 36 Exposures rolls shootable:
Manganese battery	130 approx.
Alkaline-manganese battery	180 approx
NiCd battery unit MN-2	70 approx.

Automatic motor cut-off: Manual preset substractive type; automatic motor cut-off at '0' Rewinding film sets the counter to and frees its operation. Film rewind: Sliding Rewind slide 1 and Rewind slide 2 starts the motor ta rewind film.Camera back MF-6 or MF-18 databack stops it automatically.

Battery checker: Two LEDs illuminate battery life. OK Flat in a short time Dead or depleted Battery holder: Provided with Lock knob and Click stop for preventing dropping out ** Power supply to camera: When mounted onto the camera, the MD-4 is ready to supply power to the camera.

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Battery handling and other Issues relates:

1. New batteries: Between manufacturing and first use, all batteries exhibit some drain. Therefore, care should be taken to purchase the newest (and freshest) ones possible. To help you do this, some manufactures stamp the date of manufacture on the bottom of each battery. Ask your camera dealer for assistance in interpreting the codes.
2. Temperature: Battery life ratings are based on operation at around 20°C (68°F). At other temperatures, battery life is shortened. At 0°C, for instance, battery life is shortened by as much as 2/3. Spare batteries should therefore be kept available if operation in low temperatures is anticipated.
3. Continuous use: Batteries are drained much more quickly by continuous use than by intermittent use.
4. Storage: When not in use, the batteries should be removed to prevent damage from leakage. To minimize drain during the period of disuse, store the batteries in a cool, dry place.
5. Battery brands: Avoid use mixed brands of batteries, nor batteries with different model numbers. Also, avoid mixing new and old batteries since proper performance will not be obtained and battery leakage into your MD-4 may occur.
6. Disposal: Do not dispose of batteries by burning. Also, for safety's sake, do not disassemble batteries when disposing.
7. Polarity: When installing batteries, observe the voltage polarities carefully. Reversal of the positive (+) and negative (-) terminals will result in leakage. If leakage should occur, clean carefully or take your MD-4 to your dealer.

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