GOSSEN C-Mate CDs Meter User manual

Congratulations                '.,
. . . on becoming the owner of a C-MATE ex-
posure meter! Your new meter is a product of
G0SSEN GmbH, Erlangen, West Germany- man-
ufacturers of precision electrical measuring in-
struments since 1919, and one of the outstand-
ing pioneers in the design of exposure meters.

Many millions of Gossen meters are in use all
over the world, giving their owners reliable ser-
vice year after year. Well-known camera manu-
facturers have chosen Gossen exposure meters
as components in their finest cameras.

We know you will be pleased with your C-MATE
and that it will give you faithful service for a long
time to come.

Please get to know this fine instrument by read-
ing these pages with your C-MATE at hand, thus
getting off to a good start for consistently good
results.

Look up the ASA number of the film in useBASIC SETTIifG            -(you will find it on the film box or film instruction sheet) and
turn the setting knob (1) with a coin until the ASA number of
your film is lined up with the white triangle at the ASA scale
window (2).
    Atter fhis basic setting, yaltr C-MATE is ready
   tor operation. No turther setting is necessary
   as long as you use the same film type, or lilm
   having the same ASA number.
The ASA scale (2) shows the values listed below in red type.
The intermediate values are indicated by thin lines on the scale.
              25          100          400              1 600
  -0I           32         125           500          2000
10           40          160           650         2500
12          5!             20t)           800          3^10
16           64         250               1 000
20           80         320              1 250
                                                            1 600?5                1 !9.         400

                  Before measurihg, turn the 4-way switch01{-0FF SWITCH             -on the underside of the meter to "1" (lndicate). To preserve
battery life, turn switch to "0" (Off) whenever you are not
actively using the meter.

                                         subiects, sfide theillEASURlllG A]{D READIIIG                       - For mostspherical diffuser (10) all the way to the left (away from the
CdS symbol) so that the electric eye window is un-covered.
Point the electric eye towards the scene or subiect. When
large sky areas are included in the scene, direct the meter
sllghtly downwards to exclude light from the sky which would
result in too high a reading.

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Note the number at the needle position (3) on the rneter scale     )
(4), and turn the computer rim (5) so that the same number
(or intermediate dot) is set on the movable computer scale (6)
against the black triangle above  it.

You can now read complete exposure information on the upper
computer scales in combinations of f-stops (8) and exposure
times (9).

                                              fractions of    Exposure times with as/ash  ( l) are
                                                 Plain                          11125 sec.           Example:   seconds.                   /125 -                                    marked                         Numbers                    tull seconds.   numbers are
  "m" are tull minutes.

For movie Gameras use the f-stop opposite the operating speed
of your camera (frames per second) on the CINE scale (7).
(Check camera instructions for speed of your camera)

    lntermediate dots on the CtNE sca/e represent,
   lrom right to left: 12,32, 48 and 72 tps)


HELPFUL FACTS AB0UT LIGHT MEASUREMENT-Your C-MATE
offers you the advantage of being able to measure either the
 light reflected from the scene, or the incident light that illumi-
nates the scene! Thus, the meter is designed to give you
reliable exposure information under all kinds of picture-taking
conditions, and you can make it serve you best by adding your
own thinking to the measuring process. (Even the biggest
electronic computer needs the human mind to "program"  it!)
The following will aid you in getting' the most out of your
C-MATE for finest results.
                                                      (continued)

';
/ft
Rellecled light reading. When you point the C-MATE (with
un-covered electric eye) from the camera position towards
the scene, it measures the light reflected by all parts of the
scene, strikes an average and indicates a suitable exposure.
And, normally, the exposure indicated by such an overall re-
flected light reading is perfectly correct.

lf the scene contains strong contrasts in brightness or color,
it is preferable to mdasure that part of the scene which re-
quires the most accurate exposure. For negative films, this is
usually a darker area which is to show detail in the final black-
and-white or color print, whereas for color slides or movie
films the lighter areas are usually favored. To measure such
important areas, get closer to the subject but not so close that
your own shadow or that of the C-MATE falls on the subject.
Such close-up readings are especially appropriate  if an impor-
tant darker subject is backlighted or when an important
brighter subject is against a dark background.

0r, instead of taking a close-up reading if the subject is in-
accessible, you may take a substitute reading by pointing the
meter at a nearby subject which receives the same illumination
as the actual scene, and which is similar to the subject. (Your
own hand or ski parka or a nearby flower, for instance.)

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  (-'@
AIncident lighl reading. The most convenient way to determine
exposure for scenes containing extensive bright or dark areas
is by means of an incident light measurement. Simply slide the
diffuser (10) over the electric eye (it'clicks' in) and point the
meter, from the subject position, toward the camera. 0r, if the
subject is too far away, point the meter towards the camera
from a position which receives the same light. Thus, instead of
having to measure individual 'areas of the scene, you measure
the actual light falling on the scene and your C-MATE will
indicate the correct exposure to take care of contrasts.
TESTIl{G THE BATTERY.
The life of the battery suppfied with your C-MATE depends
on the use of the meter. lf you keep your C-MATE closed in
its case, except for actual light measurement, or if you turn
the operating switch to "0" (0ff) between measurements, the
battery will have a life of about two years.
It is advisable to check the battery condition from time to
time: Turn the operating switch 0n the underside of the
C-MATE to "T" (Test); with this setting, the meter needle
should stand within the test line between the numbers 10 and
12. Otherwise, a fresh battery (Mallory PX-13 or equivalent)
must be used.
To replace the battery, turn 4-way switch t0 "X" and lift off.
Insert fresh battery with its inscription facing up. Replace
cover at "X" position, press down and turn t0 "T" for battery
test as described above. For immediate measuring, turn to "1".
Otherwise, turn to "0" (0ff).

*:TESTIilG THE ZERO POSITI(ll{.
With the 4-way switch set at "0" (0ff), the meter needle should
rest on the zero line at the extreme left-hand side of the meter
scale (4). To adjust the needle position, gently turn the zero
adjustment screw on the underside of the C-MATE.

CARE AND SERUICE.
Your Gossen C-MATE CdS is a valuable precision instrument.
It deserves your good care! Always carry your C-MATE in its
protective eveready case, and avoid storage in hot places
(glove compartment, trunk or back shelf of your car in sum-
mertime, near radiators at home) as extreme heat may affect
the battery.

Each new Gossen C-MATE CdS exposure meter is supplied
with a warranty/registration card.
lf repair or adjustment should become necessary, send the
meter (directly or through an authorized dealer), carefully
packed and prepaid to: Gossen Service Department, BERKEY
MARKETING C0MPANIES lNC., P. 0. Box 1060, Woodside, N.Y.
11377

The package should be accompanied by a description of the
 trouble encountered.


               Sole U.S. Distributor
                                                                                                                                                         It
BERKEY MARKETING COMPAIUIES, INC.                                                                                                              oo             G.-.,oSEN DIVISION
                                                                                                                                                         I        New York  .  Los Angeles