Medical-Nikkor 120mm f/41F Nikon INSTRUCTION MANUAL
NOMENCLATURE LED read DATA button Power socket Power cord connection mark Focusing lamp R Film speed/aperture index t flash Sync cord connection mark Sync socket LAMP button R 2 istance index re scale
Power Supply (Optional) Cords AC Power Unit LA-2 Neckstrap eyelet Power cord socket Pilot lam Power switch Ground terminal Cord fastener selector Grounding cord AC cord Battery chamber lid Power switch Power cord socket tt it x ~ SlS 394 312 ~ 272 ~ 2J 191 x08 08S 09 Q9S 1 'I /& /,' J 'I, 1 h' 1" IS.
CONTENTS----------------- FOREWORD----------------NOMENCLATURE . .. . . . . .. . . .. . .................... 2-3 FOREWORD .... . . . . . . .. . . . . . . ..... .. . ..... ...... 4 OPERATION .... ......... . ...... . . . .. . . . . . ...... . 5-18 MOUNTING THE LENS .......... . . . ..... . . .. . . . .. ... 5 CONNECTING THE POWER SUPPLY .. . . . . . . . ..... . 6-7 CONNECTING THE SYNC CORD ... . .. . ........ . . . 8-9 SETTING THE ASA/ISO FILM SPEED ................. 10 SETTING THE SHUTTER SPEED DIAL .... .
OPERATION--------------------------------------------MOUNTING THE LENS Position the lens in the camera's bayonet mount, lining up the black dot on the lens with the lens mounting index on the camera. Grasp the lens barrel and twist it counterclockwise until the lens clicks into place. To remove, depress the lens release button on the camera and twist the lens clockwise. Note: To mount the 2X close·up attachment lens, refer to page 14.
-OPERATION-continued----------------------CONNECTING THE POWER SUPPLY The Medical-Nikkor 120mm f/4 accepts either AC or DC power units, allowing the lens to be used indoors or out. • DC Power Unit LD-2 This battery unit holds eight 1.5V AA-type penlight batteries. To install the batteries, first slide the battery chamber lid in the direction of the arrow, and open the lid (1) . Remove the battery clip.
• AC Power Unit LA-2 Before using the AC unit, make sure the voltage selector is set for the proper voltage. The unit has separate settings for 220 and 240 volts. Insert a small coin in the slot and turn the screw so the slot points to the proper setting (220 or 240) . The 100 and 117 volt settings shown in the photo (1) cannot be used . To use the 100 or 117 volt settings, take the unit to your nearest Nikon service centre for adjustment.
-OPERATION-continued----------------------CONNECTING THE SYNC CORD Two separate sync cords are supplied with the lens. Select the cord best suited to your type of camera . • 2-Pin Sync Cord SC-20 The 2-pin sync cord is for use with all Nikon and Nikkormat cameras, except the Nikon F-301 / N2000 ~ FG , FG-20 and EM. Connect one end of the 2-pin cord to the sync socket on the lens barrel by aligning the arrow on th e plug with the ~ mark next to the socket .
• 3-Pin Sync Cord SC-22 The 3-pin sync cord can be used with all Nikon and Nikkormat cameras having standard ISO-type hot shoe. When the SC-22 is used with the Nikon F3-series*, FA, FE2, FE, FM2, F-301/N2000, FG, FG-20, or EM, the camera's ready-light in the viewfinder operates, so you can take pictures without removing your eye from the viewfinder.
-OPERATION-continued----------------------SETTING THE ASAjlSO FILM SPEED The flash output of the ringlight varies according to the setting of the ASA/ ISO ring. To get correct exposure with the ringlight flash, you must first adjust the AS A/ ISO ring for the film in use. To do this, loosen the locking screw on the ASAjlSO ring and turn the ring until the number corresponding to the ASAjlSO of your film is opposite the index mark. It is possible to set any film speed from ASA/ISO 25 to 800.
SETTING THE SHUTTER SPEED DIAL The shutter speed setting necessary for proper flash synchronization depends on the type of sync cord used, the film speed set on the lens ASA/ISO ring and the Nikon or Nikkormat camera you are using. Please refer to the table below for the appropriate shutter speed setting. • With 2-pin Sync Cord SC-20 ~ F3·Series (via AS·4 or AS-7) FA , FE2, FM2 (with 1/250 sec. sync speed) FE FM2 (with 1/200 sec. sync speed) 1/80 sec. (X) or slower 1/250 sec. or slower 1/ 125 sec.
- OPERATION-continued- - - - - - - - - - -- - - - - - - - - - - READY-LIGHT INDI CATION After the power supp ly is switched on, a red LED ready-light, built into the top of the lens barrel, lights up as soon as the ringlight is ready to fire. When the shot is taken, the ready-light goes out, but then comes back on as soon as the ringlight is recycled and ready to fire again. In addition, with the OAT A button on, the reproduction ratio visible inside the viewfinder serves as a ready-light.
FOCUSING/DETERMINING THE EXPOSURE This lens focuses in the same way as other Nikon/Nikkor lenses do. Therefore, if the reproduction ratio is less important to you, simply turn the focusing ring until the subject appears sharp in the viewfinder. However, if you wish to take pictures at a certain reproduction ratio, first set the focusing ring to the desired setting (e.g. 1/4X) and then move in and out until the subject appears sharp. This will produce photographs at a predetermined reproduction ratio.
- OPERATION - continued- - - - - - - - - - - - - - - - - - - - - - - SETT ING THE REPRODUCTION RATIO To set the reproduction ratio between 1/11 X and 1 X, simply turn the focusing ring until the desired reproduction ratio on the white scale clicks into place. If you want to shoot at magnifications between O.8X and 2X, attach the 2X close-up attachment lens (as described below), and set the focusing ring to the appropriate reproduction ratio on the orange scale.
• With 2X Close-Up Attachment Lens • Prime Lens Only Reproduction ratio Focused m distance (ft) Depth of field mm (in.) Subject field mm (in.) Depth of field mm (in.) Subject field mm (in.) 1/11X 1.6 (5.25) + 25.4 ! + 1.0001 -24.4 - 0.961 264 x 396 (10.40 x 15.59) 0.8X 0.33 (1.08) + 2.47!+ 0.0971 - 2.35 - 0.093 30 x 45 (1.18 x 1.77) 1/8X 1.2 (3.94) +17.9!+0.7051 -17.3 -0.681 192 x 288 (7.56 x 11.34) 0.85X 0.325 (1.07 ) + 2.21 (+0.087) - 2.11 (- 0.083) 28.2 x 42.4 (1.11 x 1.
-OPERATION-continued----------------------IMPRINTING THE REPRODUCTION RATIO The OAT A button on the side of the lens barrel determines whether or not data will be displayed in the viewfinder and imprinted on the film. When the OAT A button is pushed once, it remains in the down or ON position. In this case, the reproduction ratio set on the lens appears in green at the lower righthand corner of the viewfinder image as soon as the ringlight flash is ready to fire.
STOP-DOWN EXPOSURE MEASUREMENT Although the lens has a built-in ringlight for shooting, you can take pictures without it. In this case, use the stop-down method for exposure measurement. When focused or set to a particular reproduction ratio, the Medical-Nikkor is also automatically set to a particular aperture, which can be read off the focusing ring.
-OPERATION-continued----------------------FOCUSING LAMP If the ambient li ght is dim, push the LAMP button to illuminate the subject for focusing. After removi ng your finger from the button, the lamp stays on for 16 seconds, then turns off automatically to conserve power. If necessary, you can press the button once again. After taking a picture using the ringlight, the focusing lamp immediately goes out. To turn the focusing lamp off before the 16-sec.
RECOMMENDED FOCUSING S C R E E N S - - - - - - - - - - - - Various interchangeable focusing sc reens are available for F3- and F2-series cameras to su it any type of lens or picture-taking situation. Those which are recommended for use with your lens are listed below. For screens used with Nikon cameras other than F3- and F2-series cameras ::s: K E B AIL C 0 Gl G2 G3 (e.g., Nikon FA, FE2, FM2 and FE), refer to the column for F3-series cameras.
C A U T I O N S - - - - - - - - - LENS CARE- - - - - - - - 1. Due to the electrical characteristics of the MedicalNikkor's ringlight flash and focusing lamp, this lens should not be used in an explosive environment (i.e., an oxygen-enriched atmosphere) or in close proximity to highly combustible materials (i.e., high -pressure gas bottles). . 2. To eliminate any possibility of electric shock, the following precautions should be observed when using the Medical-Nikkor lens with the AC or DC power unit. .
ABOUT GROUNDING------ ACCESSORIES-------• Before connecting or disconnecting the ground cord, make sure the LA-2's AC plug is not connected to a wall outlet. • With an outlet having a ground terminal, connect the ground cord securely to the ground terminal. • To connect the ground cord to a metalic water tap (a plastic tap cannot be used), securely wind the cord arou nd the tap. • Never connect the ground cord to a gas pipe.
SPECIFICATIONS--------------------Focallength Maximum aperture Lens construction Picture angle Distance scale Aperture scale Diaphragm Reproduction ratio Data imprinting Flash illumination 22 120mm (at 1/11 X) f/4 Prime lens: 9 elements in 6 groups; 2X attachment lens: 2 elements in 1 group 20°30' Graduated in meters from 1.6m to 0.35m for 1/11 X to 1X (white numerals) and 0.33m to 0.26m for 0.
DC Power Unit LD-2 (with 8 AA-type batteries) Recycling times Manganese Alkalinemanganese batteries batteries Approx. ASA/ISO Approx. 9 sec. 25 12 sec. Approx. ASA/ISO Approx. 4 sec. 100 5 sec. Film speed Dimensions Weight Number of flashes AlkalineManganese manganese batteries batteries Approx. Approx. 50 90 Approx. Approx. 450 250 98mmt/> x 150mm long (overall); 142mm extension from flange Approx.
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