Nikon Medical-Nikkor 120mm f/4 IF User manual

Medical-Nikkor
120mm
f/41F
Nikon INSTRUCTION MANUAL

NOMENCLATURE
DATA button
LED read
Power socket
Power cord connection mark
Focusing lamp
R t flash
Film speed/aperture index
Sync cord connection mark
re scale
Sync socket
LAMP
button
R istance index
2

Cords
x ~ /& /,' ~ ~ J h' 'I, 1
tt SlS 394 312 272 2J 191 1" IS. 131 111 liS
x08 08S 09 Q9S 1 'I 12 13 IS 18 ]
it 108 08~
Distance scale conversion sticker (in feet)
Power Supply (Optional)
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
Neckstrap eyelet
3

CONTENTS-----------------
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 .... . ..... ... ... 11
READY-LIGHT INDICATION. . . . . . . . ... ..... .. .. 12
FOCUSING/DETERMINING THE EXPOSURE . . . . ... 13
SETTING THE REPRODUCTION RATIO. . . ... . ... . 14-15
IMPRINTING THE REPRODUCTION RATIO . . .. . . . .... 16
STOP-DOWN
EXPOSURE MEASUREMENT . . . ...... . . .17
FOCUSING LAMP . . . . . . . . . . . . . . . . . . . . . .
..... 18
RECOMMENDED FOCUSING SCREENS .. . . . . . . . . .. .. . . .19
CAUTIONS . . . . . . . . . . . . . . . . . . . . . ...... . ..... . . . . . .20
LENS CARE . . .. . . .. . . . . ... . ... . . ..... . ...... . . .. . ... 20
ABOUT GROUNDING .... . . . . . .. . . .... ... .... ........... 21
ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 21
SPECIFICATIONS .. . .. . .. .. . .
... 22-23
*The Nikon F-S01/N2020 (not mentioned in this manual) is sub-
ject
to the same treatment as the Nikon F-30 1/N2000.
4
FOREWORD-----------------
Featuring internal focusing (IF), the Medical-Nikkor
120mm f/4 IF
is a close-up lens providing continuously
variable reproduction ratios from 1/11 X down to 1X
and, with the attachment
of a single 2X close-up attach-
ment lens, from
O.8X to 2X. Because focusing is done
internally, there
is no extension in the lens barrel, making
the
lens extremely well-balanced and convenient to use.
Exposure with the built-in ringlight is totally automatic.
Once the ASA/ISO ring
is set for the film speed in use,
the flash output is automatically determined. Then,
using a "guide number system," the diaphragm and
focusing ring are coupled,
so that the appropriate
aperture for correct exposure
is set as you focus. To let
you know when the flash
is recycled and ready to fire,
an LED ready-light is built into the top of the lens
barrel.
In addition, automatic imprinting of the reproduction
ratio
in use is possible via an ingenious system. Using a
green
LED and a miniature optical system inside the
lens barrel, the ratio is projected through the lens and
appears
in the camera's viewfinder at the lower right-hand
corner
of the frame. Then, at the instant of exposure, the
ratio
is imprinted on the film.
Finally, this
lens offers a choice of AC or DC power
units for use indoors or out.
Although this complete close-up system
is called a
"Medical-Nikkor" lens, it
has many other applications,
including dental, scientific, industrial, and nature
photography.

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 .
5

-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. Load the batteries
making sure that the positive and negative (+ and - )
poles are aligned
correctly as shown inside the battery
clip. Put the battery clip back into the chamber, making
sure that the contacts go in first (2). Then, slide the
lid back into place. When replacing batteries, replace
all
eight at once.
To connect the battery unit to the lens, plug one end of
the power cord 5C-21 (supplied with the lens) into the
power socket on the lens barrel by aligning the arrow on
the plug with the T mark next to the socket (3). Then ,
align
the white dot on the other end of the plug with the
metallic dot near the edge of the LD-2's power socket,
and push the plug into the socket until it clicks into
place (4).
To remove the plug from the DC unit, grasp the plug by
its metal locking ring and pull it out.
Caution: Before connecting the power cord SC-21 to or discon.-
necting
it from the LD-2, make sure that the power switch is
off. Otherwise, the ringlight might be damaged.

• AC Power Unit LA-2
Before using the AC unit , make sure the voltage selector
isset forthe propervoltage. 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 ad-
justment.
To connect the AC unit, plug one end of the power cord
SC-21 into the power socket on the lens barrel by aligning
the arrow on the pi
ug with the T mark next to the socket
(2) . Next, align the white dot on the other end of the plug
with the metallic dot near the edge of the LA- 2' s power
socket, and push the plug intothe socket until itclicks into
place
(3) . Finally, plugthe AC cord into awall outlet. When
the
AC unit is switched on, the pilot lamp on top of the
unit lights up immediately.
To remove the power cord's plug
from the
AC unit, grasp the plug by its metal locking ring
and pull
it out.
Caution 1: The groundingcord (supplied with the LA - 2) should be
plugged into the ground terminal at the back of the AC power unit
to ground the
system whenever possible. (See page 21 for details).
Caution 2: Before connecting the power cord SC - 21 to or discon-
necting
it from the LA-2, make sure that the power switch is off.
Otherwise, the ringlight might be damaged.
7

-OPERATION-continued-----------------------
8
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 Nikkor-
mat 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 th e arrow on the
plug with
the ~ mark next to the socket. Then , plug the
other end into the sync term inal on the camera . This end
of the sync cord is threaded for positive connection to
the camera 's sync term inal. If you are using a Nikkormat
FTN which has two sync terminals on th e side of th e
body,
connect the sync cord to the X terminal.
* In the U.S . A. and Canada, the Nikon F-301 camera is sold as
the Nikon N2000.

• 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. In addition, with the Nikon F3-series, FA,
FE2, FE, F-301/N2000, FG, FG-20, or EM camera set
for automatic operation or at certain manual shutter
speeds, the proper sync speed is automatically set by turn-
in g on the power supply for the Medi ca l-Nikkor 120mm
f/4 IF lens . (For details about automatic switchover to
flash sync speed, refer to your camera's instruction man-
ual.)
To use the 3-pin sync cord, first plug one end into the
sync socket on the lens barrel by aligning the arrow on
the plug with the
~ mark next to the socket. Then, slip
the other end into the camera's hot ~ hoe until it stops,
and tighten the attachment screw.
* Use of the Flash Unit Coupler AS -4 or AS -7 is required.
9

-OPERATION-continued-----------------------
1 ·· 1 .- 1 ·· 1 ·· 1 ·· 1
800 400 200 100 50 2~
10
SETTING THE ASAjlSO FILM SPEED
The fl ash output of the ringlight varies according to the
setting of the ASA/ I SO ring. To get correct exposure
with the ring
li ght 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. Dots between the
numbers on the film-speed scale represent intermediate
settings such as 32, 40, etc. (see illustration). Once you
have lined up the ASA/ISO number, retighten the
locking screw to hold the ring
in place.
Note : When shooting predominantly li ght or dark-toned subjects,
it may be necessary
to make expos ur e compensation by resetting
the ASAjlSO ring to a higher or lower setting.