Sixtomat flash
Operating Instructions
15007 • 1/5.98
Socket to
connect the
synchronizing cable
button M
to adjust
the values
Buttons to select
the required
Made in Germany
1,5 Volts
Eyelet for
carrying strap
GOSSEN Foto- und Lichtmeßtechnik GmbH
Display . . . . . . . . . . . . . . . . . . . . . . . . 5
The display and its elements . . . . . . . 5
Display duration . . . . . . . . . . . . . . . . . . 6
How the SIXTOMAT flash functions . 6
Preparations . . . . . . . . . . . . . . . . . . . . 6
Incident and reflected light
measurement . . . . . . . . . . . . . . . . . . . . 7
The individual functions . . . . . . . . . . 9
Setting the film speed . . . . . . . . . . . . . 9
Measuring functions . . . . . . . . . . . . . . . 9
Flash readings . . . . . . . . . . . . . . . . . 10
Multiple flash . . . . . . . . . . . . . . . . . . . 11
Shutter priority mode . . . . . . . . . . . . 11
Contrast measurement . . . . . . . . . . . 12
Aperture priority mode . . . . . . . . . . . 12
Exposure value EV . . . . . . . . . . . . . . 13
CINE scale (frames per second) . . . . 13
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Measurements outside the
measuring range . . . . . . . . . . . . . . .
Display outside the display range . . .
Setting and measuring
correction values . . . . . . . . . . . . . . . .
Setting correction values . . . . . . . . .
Measuring correction values . . . . . .
Cancelling correction values . . . . . .
Important remarks concerning
correction values . . . . . . . . . . . . . . . .
Service remarks . . . . . . . . . . . . . . . 18
Technical data . . . . . . . . . . . . . . . . . 19
Your SIXTOMAT flash is an exposure meter with
digital display from GOSSEN. It measures continuous light and flash, and it covers a wide
measuring range with great accuracy.
A wealth of knowledge in the area of light metering, based on many decades of experience in
the manufacture of exposure meters, is now
being made available to the user, in the simplest
manner possible, through microprocessor technology.
As a result of its precise calibration, the
SIXTOMAT flash measures with the greatest accuracy, and operation is exceptionally simple
and convenient.
Features characterising the SIXTOMAT flash:
– Measures incident and reflected light,
flash (with cord or cordless) and the level of
ambient light
– Microprocessor controlled
– Digital LCD display in tenth stops
– Analog contrast display in half stops
– Storage of settings and readings
– Programmable exposure correction
– Recall of all possible shutter speed/aperture
combinations of a given reading
– Aperture or shutter priority preselection
– Extremely convenient to measure flash
– Covers the entire CINE scale
(frames per second), including the
TV standard 25 and 30 f.p.s.
– Warning when range is exceeded
– Automatic battery check
– Auto off
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1.1 The display and its elements
4 3
3 Display identification
4 Display identification
exposure value (LW)
for aperture
5 Analog aperture scale
11 12
6 Left-hand digital display
– Aperture f
– Exposure value EV
– Correction value stops
– Multiple flash
– Film speed in DIN
1 Functions
– Flash measurement
– Continuous light measurement
with shutter priority
– Continuous light measurement
with aperture priority
– Continuous light measurement
with read-out of exposure values (EV)
– Entering the correction values
– Setting the film speed
7 Display identification
2 Digital display of film speed DIN/ASA (ISO)
11 Unit symbol m = minutes
8 Warning sign
for exposure time
for battery check
9 Display identification „/“ for fractions
of a second
10 Right-hand digital display
– Exposure time t
– Exposure extension factor
– CINE (frames per second); symbol:
– Film speed in ASA
12 Unit symbol s = seconds
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1.2 Display duration
The display is automatically shut off, i.e. there
are no readings, if any control button of the
SIXTOMAT flash has not been used for 2 minutes; the readings are stored.
– The stored values are recalled by depressing
the function or value buttons
– Renewed measurement is instantly possible
when the metering button is depressed.
The values of the last meter reading are stored
until a new meter reading is taken.
The SIXTOMAT flash is fitted with separate memories for continuous light and flash measurement.
How the SIXTOMAT flash functions
2.1 Preparations
The SIXTOMAT flash operates with a 1,5 V
AA-type battery (alkaline-manganese battery).
Since the meter’s power consumption is minimal,
the battery will last for a long time. When the battery’s capacity becomes exhausted, the BAT
symbol appears on the display as a warning that
the battery has to be replaced at the earliest possible opportunity.
Measurements cease to be possible if the display only indicates BAT . The battery must be immediately replaced.
To change the battery open the battery comppartment of the SIXTOMAT flash. Remove the
exhausted battery and insert the new one. Ensure correct polarity „+“ and „–“! Push back the battery compartment cover. Battery changing
erases all stored values.
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Self-Checking routine
2.2 Incident and reflected light
With regard to its measuring possibilities and
operation, the SIXTOMAT flash was designed
for professional use. Due to its adjustable diffuser dome, the meter is easily adapted for the dedicated amateur and the professional
The microcomputer performs a self-checking
routine as soon as the battery has been inserted.
Every possible display segment appears on the
display during this routine. The duration of the
self-checking routine is approximately 10 seconds, but it can be interrupted by depressing any
button. The factory-programmed basic settings
are automatically adjusted as soon as the selfchecking routine has been completed.
Basic values
0/ 1.0
f 5.6 1/60
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Incident light measurement leads to particularly
precise exposures. With incident light measurement the SIXTOMAT flash is used with the diffuser dome in place, and pointed from the subject
to the camera.
This guarantees a precise exposure in conformity with the correct tonal values of the subject.
This is particularly important with inherently
bright or dark subjects. Even in difficult exposure
situations, for instance with contrasty subjects,
incident light measurement with the diffuser results in far more accurate exposures to satisfy
the most discerning professional requirements.
Measurement by the incident method is far more
accurate and reliable to establish the correct exposure setting than the calculating of a mean value obtained with the reflected light measurement
in your camera. In the latter case, the reading depends upon the range of contrasts of the subject.
However, there is not always a uniform distribution of bright and dark areas of equal importance
within the subject. Incident light measurement is
also imperative with inaccessible subjects.
For this purpose it is necessary to select a point
that has the same lighting level as the subject.
And then a meter reading is taken that lies parallel with the projected connecting line between the
actual subject and the camera. This very convenient method of light metering at a point with the
same lighting level is highly recommended for
outdoor shots. The measurement is performed
with a complete „180°“ turn in front of the camera
so that the reading is taken with the meter pointing towards the camera, i.e. opposite the actual
picture shooting direction.
Incident light measurement, i.e. with diffuser, also
gives a precise reading of the brightness range of
the lighting. Both kinds of lighting – flash and continuous light – are measured with great accuracy
by the incident light method with diffuser.
Parallel to this, the SIXTOMAT flash also offers
the reflected light measuring method. In this
mode the diffuser dome is pushed aside to the
left or right, and the meter is pointed from the camera towards the subject. The meter now only
measures the light reflected by the subject. Consequently, the reading always depends upon the
inherent brightness of the subject!! This means
that inherently brighter subjects are not precisely
measured and therefore rendered darker. If readings are to be taken exclusively by the reflected
light measuring method, then it is advantageous
for the professional to use a grey card (18 % reflection) in this mode. The reflected light method
is used to measure the subject contrast which is
displayed by the SIXTOMAT flash on its analog
scale (see Section 3.2.4 Contrast measurement,
page 12).
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The individual functions
3.1 Setting the film speed
– Select ISO with the function buttons
– Adjust the required ISO value with the
value buttons (display left: DlN value,
right: ASA value)
Once the film speed has been set, it is transferred to the memory of the SIXTOMAT flash when
the meter is adjusted to any operating function,
and remains visible on the top right-hand side of
the digital display.
Any change of the film speed directly influences
the stored paired aperture and shutter values.
The selected film speed is retained in the memory until it is changed in the described manner.
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3.2 Measuring functions –
Continuous light measurement
– Shutter priority in function t :
a reading is taken for the corresponding aperture (see Section 3.2.3 Shutter priority mode –
Continuous light measurement, page 11)
– Contrast measurement in function t
(see Section 3.2.4 Contrast measurement,
page 12)
– Aperture priority in function f :
a reading is taken for the corresponding shutter speed (see Section 3.2.5 Aperture priority
mode, page 12)
– Exposure value measurement in function
EV : the shutter speed is preselectable, and
the aperture is given as an analog value (see
Section 3.2.6 Exposure value EV, page 13)
– CINE (frames per second) in function t : (see
Section 3.2.7 CINE scale (frames per second),
page 13)
Select the required function with the corresponding function buttons.
3.2.1 Flash readings
Readings can be taken with or without synchronizing cable. When used in conjunction with a
synchronizing cable the flash is fired by depressing the M button – the flash is automatically fired and measured.
– Select
with the function buttons
– Adjust the desired synchronizing speed with
the value buttons. Synch range from 1 s to
1/1000 s (including 1/90 s)
– Depress the measuring button M .
SIXTOMAT flash is operable for metering for a
period of 45 s (meter readiness prevails as
long as F remains visible on the display)
– Fire the flash
– The measured aperture (total of flash and continuous light) appears on the left digital display, and as a flashing mark on the analog
aperture scale. The aperture for the share of
continous light is additionally indicated on the
aperture scale (in our example f/8).
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3.2.2 Multiple flash
Occasionally the light output from a single flash
may not be sufficient to enable you to work at the
aperture desired. When this happens, simply
push the top value button until the desired
f/number appears in the display.
The digital shutter speed display disappears, to
be replaced by information on the number of flashes that have to be fired for the desired f-stop
(e.g.: F4 = 4 flashes).
The SIXTOMAT flash will calculate up to a
maximum of 10 flash sequences.
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3.2.3 Shutter priority mode –
Continuous light measurement
– Select t with the function buttons (the last
stored value appears on the display)
– Adjust the desired shutter speed with the value buttons
– Measure by pressing the meas. button M
– The measured aperture appears
on the left-hand digital display
(accuracy: 1/10 stops), also as a rounded
mark in the analog aperture scale
– Select alternative aperture/shutter speedcombinations with the value buttons
3.2.4 Contrast measurement
3.2.5 Aperture priority mode
– Select t with the function buttons
– Keep the measuring button M depressed
while aiming the meter at various areas of the
subject. The analog aperture scale displays
the f-stop series between two extreme values,
and with the actual measured value flashing.
The first measured f-stop is displayed on the
left-hand side of the display (it remains displayed as a reference value (e.g. of a
grey card)).
– After the measuring button is released, the
entire measured contrast range is displayed
on the analog aperture scale, and the last
measured value will cease to flash.
– Select f with the function buttons
– Set the desired aperture with the value buttons. The intermediate 1/10 stop values stored
from the last measurement appear when the
aperture is preset. These are invalid because
the valid 1/10th stops will only appear after the
next meter reading is taken.
– Measure by pressing the meas. button M
– The measured shutter speed appears on the
right-hand digital display
– Automatic adaptation of the aperture
in 1/10 stops to the measured shutter speed
– Select other paired aperture/shutter values
with the value buttons
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3.2.6 Exposure value EV
3.2.7 CINE scale (frames per second)
– Select EV with the function buttons
– Measure by pressing the meas. button M
– The measured exposure value appears
on the left-hand digital display
(accuracy: 1/10 stops), and the aperture as a
rounded-off mark in the analog aperture scale
– Select with the value buttons other paired
aperture/shutter speed values corresponding
with this exposure value.
– Select t with the function buttons
– Select the desired Cine speed (f.p.s.)
by increasing the shutter speed setting
beyond 1/8000 sec. After approx. 1 second
the meter switches over to CINE speeds.
The symbol
appears on the display.
The CINE speeds can be preset between
8 and 64 frames/second.
– Measure by pressing the meas. button M
– The measured aperture appears on the lefthand digital display (accuracy: 1/10th stops),
and additionally as a rounded-off mark in the
analog aperture scale
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The displayed aperture applies to a 180° shutter
blade. Enter a COR value in the function COR for
other shutter blades as an extension factor.
V = 180°: open aperture angle
3.3 Measurements outside the
measuring range
– The SIXTOMAT flash will not produce any
useful readings outside its measuring range
– If it is too dark or too bright, an E (= Error) appears on the left-hand digital display, and alongside it
for too dark, or
for too bright
3.3.1 Display outside the display range
If the symbol
appears on the right or left
digital display it indicates that the taken reading
is outside the meter’s display range.
actuate value button
play range.
to enter the dis-
acuate value button
play range.
to enter the dis-
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3.4 Setting and measuring correction values
(see Section 3.4.4 Important remarks concerning correction values, page 17)
The extension factor is shown in the right-hand
digital display, and the correction value in stops
in the left-hand section.
3.4.1 Setting correction values
Enter in 1/10th stops (small figure) within a range
of ±7.9 exposure value stops.
A figure preceded by „–“ indicates an exposure
extending correction.
–3.1 stops equal factor 8.6.
– Select COR with the function buttons (the last
valid correction value appears on the display)
– Enter or change the correction value with the
value buttons
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In the event of an exposure shortening correction, only the left-hand display appears as an exposure value difference in stops.
3.4.2 Measuring correction values
Insert the light-reducing filter (e.g. neutral density
filter) in the optical path, and press the measuring button.
The light reducing factor in stops, and the extension factor, automatically appear on the display.
Pressing the function buttons transfers the
correction values to the memory of the
The box around COR still appears when a corretion value was entered.
Correction values can also be directly measured.
However, measurement does require constant light.
Depression of the measuring button initiates a
reference measurement that is identified on the
digital display by rF --.
The COR value is now automatically considered
in all subsequent measuring functions.
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3.4.3 Cancelling correction values
– Select COR with the function buttons
– Press measuring button (display rF --)
– Select any other function with a function
– Correction value is cancelled, and the box
around COR disappears
3.4.4 Important remarks concerning
correction values
The SIXTOMAT flash is a precision meter calibrated with great accuracy to provide exact exposure data. Should you still not be satisfied with
the results, then you should remember that there
are independent variables that can influence the
success of your exposures.
For instance:
– the „true“ speed of your film can deviate from
that on the pack
– the „true“ shutter speeds and f-stops
on your camera can differ slightly form
the rated values
– Deviations can arise when the film is processed
To above must be added purely subjective factors and matters of personal preference in the
assessment of the finished photos. However,
you can calibrate your SIXTOMAT flash to characteristics of your camera, your brand of film,
your processing methods, and to your projector.
GOSSEN Foto- und Lichtmeßtechnik GmbH
We recommend the following procedure:
Take the readings of a few normal subjects with
the utmost care by the reflected and incident light
measuring methods, and take five shots of each
subject on colour reversal film. The first picture
should be exposed with the exposure settings
supplied by the SIXTOMAT flash. The exposure
settings for the remaining shots are then
increased and decreased, respectively, by half
an f-stop and then a full f-stop. Make a note of
the shooting conditions. These must not change
while the five shots are being taken. Now select
from the processed pictures the one you consider to be optimal and compare its settings with
the meter readings.
Service remarks
In the event that your SIXTOMAT flash is not
working to your complete satisfaction, please
send it to:
GOSSEN Foto- und Lichtmeßtechnik GmbH
Lina-Ammon-Str. 22
D-90471 Nürnberg
0911 / 8602-180
0911 / 8602-142
or to the GOSSEN Agency in your country.
If you find that you prefer exposures taken with
settings that differ from those supplied by the
meter, then these settings can be programmed
into your SIXTOMAT flash. With your correction,
the SIXTOMAT flash will give precise readings to
produce optimal exposure results.
GOSSEN Foto- und Lichtmeßtechnik GmbH
Technical data
Measuring methods
Measuring range
(with ISO 100/21°)
Incident light
Reflected light
Contrast measurement
Flash (cord/cordless)
Indication of
ambient light share
for multiple flash
exposure correction
Flash synch speeds
(meas. time)
1 to 1/1000
including 1/90 s
CINE values
8 to 64
including 25 and 30 TV)
Adjustable and measurable
correction values
–7.9 to +7.9
Extension factors
1.0 to 240
Film speeds
ISO 3.2/6° to 8000/40°
Acceptance angle
for reflected light
Silicon blue cell
1 x 1.5 V AA-type,
battery condition
LW –2.5 to +18
Case, neck strap,
battery and
operating instructions
Repeatable accuracy
±0.1 EV
Exposure times
1/8000 s to 60 min
Aperture stops
f/1 to f/90 9/10
Measuring range flash
(with ISO 100/21°)
f/1 to f/90
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ca. 65 x 118 x 19 mm
ca. 95 g
(without battery)
Printed in Germany • Subject to change without notice
GOSSEN Foto- und Lichtmeßtechnik GmbH
Lina-Ammon-Str. 22
D-90471 Nürnberg
Tel.: +49 911 / 8602-180
Fax: +49 911 / 8602-142
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