Modern Classic SLRs Series :
Nikon EE Aperture Control Attachment Unit DS-2
for F2SB Photomic w/DP-3 Prism - Instruction Manual -
Part II

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Installing the Battery

Unscrew the large milled cap on the attachment and place the NiCd Battery DN-1 (available as an option) into the battery well. Be sure that the plus (+) side faces out. If the battery is inserted in the wrong direction, the cap cannot be replaced.

Note: The battery DN-1 mayhave to chargeagain if you have bough them used. Hoever, when it was introduced back in the '70, the battery has been fully charged. However, even if the battery is not used, there may be some battery drain after a time lapse. Recharging will restore it to full capacity.

Checking the Battery

A built-in battery checker lets you check the condition of the battery at a glance. Turn the run control knob down until the CH mark is opposite the black dot, and watch the lamp on the top deck. If the lamp comes on with a bright light, the battery is in good condition.

A built-in battery checker lets you check the condition of the battery at a glance. Turn the run-control/power check switch down until the CH mark is opposite the black dot, and watch the lamp on the top deck. If the lamp comes on with a bright light, the battery is in good condition.

When the attachment is mounted on the camera, the Photomic finder's meter is powered by the battery in the DS-2. The batteries in the camera body are not used and the switch on the film advance lever serves no function.

Removing the Attachment

Depress the button on the A-M switch lever so that the lever, if at the A position, springs to the M setting.

ds2manualopt.jpg removeds2b.jpg
Continue depressing the button and turn the lens clockwise to the limit of its travel to remove the lens from the camera.

Loosen the lock knob on the attachment and then pull out the attachment.

Caution: When carrying the camera/attachment assembly around, specially with a long lens, always hold the camera body - never the attachment.

Automatic Exposure (AE) Control with Nikon F2 cameras:

A-M Switch Lever

The A-M switch lever sets the DS-2 for either automatic or manual exposure metering control. To set it at automatic, push the lever upward until it clicks into place with the white dot aligned with the A mark.

To override it for manual control, depress the button and the lever springs back to the M setting. This stops the servo action of the attachment, and you can manually set any desired aperture on the lens aperture scale.

Automatic Metering

Position the A-M switch lever at automatic. Set the desired shutter speed by turning the selector until the desired speed appears opposite the white dot. Depress the ON/OFF button on the side of the attachment; you will hear the attachment buzzing and will see the LED display in the viewfinder light up. This indicates that the servomotor is working to adjust the lens diaphragm for the correct aperture. Keep the ON/OFF button depressed; when the proper aperture for the selected shutter speed has been obtained, the sound will stop, and the LED display will indicate correct exposure. In the viewfinder you will see the selected aperture and shutter speed. When another combination is desired, reset the shutter speed and the attachment will adjust again for the right aperture.

Credit: Image(s) appeared herein courtesy of Mr. Vincenzo Montalto from Bestdeals$$$® <> "Bestdeals$$$", who also operates a very popular Ebay Store, selling many unique camera equipment of various brands and labels and some of the images shown here was kindly granted permission by the Company. All images appeared herein are Copyright © 2003. All rights reserved. Please respect the visual property of the contributing photographer.

On automatic metering control, the range of usable f/numbers is from f/16 to the maximum aperture of the lens in use. For example, with the 50mm f/1.4 lens, the range is from f/16 to f/1.4. The servo motor stops automatically when the drive gear reaches either of these limits. Change the shutter speed until the servo motor starts to move.

If the attachment does not move again after all shutter speeds have been tried, then the light is too bright or too dim to cover the automatic metering range. Switch to a new film that matches the available light or mount a neutral density filter onto the lens to cut down on the amount of light or use artificial lighting to increase the luminosity. Using the EE attachment with the DP-3 finder for automatic operation at very low light levels may result in "hunting"; the lens aperture oscillates through a range of one to two f-stops, and the LED display flashes intermittently. This indicates that the subject is out of automatic metering range, and you should switch over to manual operation. Note: When the servo-drive nears the end of its travel, a safety cutoff will stop the mechanism just short of either the maximum aperture of the lens or the f/16 setting to avoid overload.

Run-Control Switch

For rapid shooting with or without the motor drive and for motor-driven remote-control photography, the run-control switch locks the DS-2 attachment for continuous automatic metering. Locked in this position, the servo motor automatically and continually changes the aperture setting with any lighting variations to insure correct exposures.

To lock the attachment for continuous metering, depress the ON/OFF button on the run-control switch and turn the switch down until the ON mark is opposite the black dot.

Manual Opearation



For manual operation using the camera's metering system for exposure determination, first switch on the power and set the A-M switch lever at the M position.

Now you can make your own plus or minus exposure selections for unusual subjects or lighting situations, or for creative control of the subject. Manual control also allows you to maintain a desired f/number.

Note: When the DS-2 equipped camera is used with flash, the A-M switch lever is set to "M"; the aperture is selected manually. A shutter speed suitable for the type of flash to be used should also be set.

Motor Drive Operations

The use of the DS-2 on a motor-drive-equipped Nikon F2S/F2SB Photomic camera body provides an exceptionally high level of operation convenience for almost fully automatic photography. To ensure the best results, observe the following operation tips carefully.

Nikon F2 sbds2.jpg
Single-frame operation, continuous exposures at low motor drive speeds, and short bursts at higher speeds all generally present no problem for proper DS-2 operation. However, long bursts at higher speeds (i.e., more than approximately S frames at M2 ~ M3) may be somewhat overexposed unless precautions are taken. In these cases, manually reduce the exposure setting by 1/3-stop (e.g., with ASA 100, set the film speed dial to "125") before shooting. If the available light is uniform, it is advisable to deactivate the DS-2 and set the unit's A-M switch to the manual (M) setting When exposure compensation is made as described above, the first 1 - 2 frames may be somewhat underexposed. Be sure to consider this when beginning the shooting sequence. The time required for the DS-2 to respond to a sudden change in subject illumination is lengthened when shooting at higher motor drive speeds, because the camera's rapid cycling frequently interrupts the DS-2's servo action. As a result, some frames may be overexposed (or underexposed) if filming is performed under these circumstances.

When remote-control motorized photography is performe. it is advisable to cover the camera's viewfinder (with DP-3 prism, close the eyepiece shutter); to prevent the entry stray light. If this precaution is not taken, incorrect exposure may result.

Recharging the NiCd Battery (
more info is available at this page) The Nikon Quick Charger DH-1 recharges a completely exhausted NiCd Battery DN-1 to about 80% capacity in a brief three hours. It has a voltage selector for inputs of 100, 117, 220 and 240V.

Setting the Proper Voltage

First, set the voltage selector on the back of the Quick Charger to the right voltage. This is done by inserting a small coin or similar object into the slot of the voltage selector and turning it so that the red dot is opposite the correct 100, 117, 220 or 240V setting.


Charging the Battery

Unscrew the milled screw cap on the front panel and insert the NiCd battery into the battery well. Be sure that the plus side faces out, otherwise the quick charger will not work. Replacing the screw cap switches on the quick charger. Plug the power cord into an AC power source. The white neon power lamp on the front panel will glow green and the red neon charge-indicator lamp goes on with a red light to indicate start of charging.

Charging time depends on the power remaining in the NiCd battery, but normally a completely depleted battery will be recharged to 80% capacity in about three hours after which the charge-indicator lamp goes out. Unscrew the cap and remove the battery. Note: The NiCd Battery DN-1 provides sufficient power for about one hour of continuous servo operation (at approx. 20 ) between aperture settings of f/1.4 and f/16. If longer operation is required, the use of the Battery Pack DB-1 or the AC/DC Converter MA-4 is recommended.


AC/DC Converter MA-4 This converter adapts the DS-2 attachment to any standard house current and supplies a constant output of 3.6V 400 mA- DC. After removing the NiCd battery from the attachment, connect the battery well with the 3.6V output jack on the converter with the connection cord which comes with it. Plug the power cord of the converter into an AC power source, and turn on the power switch on the converter.Before using the converter, check to see that it is working properly by pressing the run-control switch on the DS-2 attachment. If the lamp on the converter glows, then it is operating correctly. The converter also supplies power for the Motor Drive MD-2 so that both the DS-2 attachment and the motor drive can be used simultaneously.

Battery Pack DB-1

The battery pack holds four 1.5V C-type batteries to power the DS-2 attachment. Its built-in voltage stabilizer insures constant light output.

To connect the pack, remove the NiCd battery from the attachment and connect the pack to the DS-2 attachment with the connecting cord which comes with the battery pack. Before using the battery pack, depress the run-control switch on the DS-2 attachment to make sure that the battery checker on the battery pack lights up. To conserve the batteries, do not leave the battery pack switched on when the pack is not used.

Note: Use of the Battery Pack DB-1 enables approximately four times the operation period possible with the NiCd Battery DN-1.

Nikon F2 36/250-Exposure Data Camera Set

The scope of the DS-2 in automatic photography is favorably enhanced in situations requiring precision recording of data when it is used with the Nikon F2 36/250-Exposure Data Camera Set.

F2DataSLR.jpg (13k) Loading...
These sets allow recording of time, date and other data required on a portion of the film frame for convenient reference. It is especially useful for such applications as traffic flow sampling and scientific experiments.

The addition of the MD-2 Motor Drive and the MT-1 Intervalometer to the above combination provides for unmanned and fully automatic operation. Connection between the DS-2 and the set is made through the flash synchronization terminal on the DS-2.

Trouble-Shooting for proper EE control Operation

A. If the LED display in the finder fails to light up after the control switch on the EE control attachment is depressed, make the following checks:

1) Check the condition of EE control attachment's battery. 2) Verify that the attachment and the fiader are properly mounted on the camera. If not, mount them properly.

B. If the LED display lights up but the EE control attachment fails to operate, check that:

1) The A-M switch lever is set at the A position. 2) The attachment's battery is still good. 3) Both the attachment and the finder are properly mounted on the camera. 4) The drive gear reaches either the maximum aperture or f/16 of the lens in use and stays there. If the drive gear stays at f/16, try faster shutter speeds; if it stays at the maximum aperture of the lens, try slower shutter speeds.

C. If the LED display on top of the DP-3 finder fails to light up when the eyepiece shutter is closed, carry out the checks listed in "A" and "B".

If, after the above checks have been made and the attachment still fails to operate properly, consult a external experienced Nikon service technician or make use of the F2's
Message Board to seek other users' advice.


Camera: Nikon F2S or F2SB Photomic
Lens: All Nikkor lenses with meter coupling prong
Auto/Manual selector: Provided
Meter coupling range: f/1.2 - f/16 on automatic control; f1.2 - f/32 on manual control
Shutter speed coupling range: 10 sec. to 1/2000 sec.
Power source: One 3.6V NiCd Battery DN-1, Battery Pack DB-1, AC/DC Converter MA-4
Power check switch: Doubles as run-control switch
EV range: With DP-2 finder EV -2 to EV 17 (with 50mm f/1.4 at ASA 100); with DP-3 finder EV 0 to EV 17 (with 50mm f/1.4 at ASA 100)
Flash synchronization: Sync terminal provided
Dimensions: 94.5mm high x 107mm long x 71.5mm wide
Weight: 230g (without battery)
Optional accessories: Hard case DS-1H, NiCd Battery DN-1, Battery Pack DB-1, AC/DC Converter MA-4, Nikon F2 36/250-Exposure Data Camera Set

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Credit: Chuck Hester, US for his patience, encouragement and help to setup the various content in this site; Robert Johnson for some of his original images on the F2H-MD appeared in this site; my ex-staff, KiaSu for his superb 3-D logo appeared in this Nikon F2 site; Marc Vorgers from Holland who generously provide me with some of his images of F2AS; MCLau®, who has so much time with me to re-edit the content in this site and not to mention buying a Nikon Coolpix 990 just for this site. Keat Photo, Kuala Lumpur for providing their Nikon F2A to take some images for this site; again, Mr Edward Ngoh the great camera collector who provides us his collection of F2AS with MD-2; for their images on the Speed Magny film backs; Sean Cranor for his image on Nikon F2 25th Anniversary Model; Ted Wengelaar®, Holland for his continuous flow of input on some of the early Nikon bodies; CYLeow ® , photo editor of the Star newspaper, Malaysia for some of his images used in this site. Ms Rissa Chan, Sales manager from Shriro Malaysia who has helped to provide some of the very useful input. HiuraShinsaku®, Nikomat ML, Japan for some of his images on various F2 models; my staff, Wati, Maisa, Mai and my nephew, EEWyn®, who volunteered and helping me did so many of the film scanning works. Contributing photographers or resellers: Jen Siow, Foo KokKin, Arthur Teng, Mark Fallander, John Ishii, Ed Hassel, YoonKi Kim, Jean-Louis, M.Dugentas (Dell, Mr "Arsenall" and a few images mailed in from surfers with no appropriate reference to their origin. Dedicated to KU Yeo, just to express our mutual regrets over the outcome of a recent corporate event. Made with a PowerMac, broadcast with a Redhat Linux powered server.

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