Gossen MetraWatt STARLITE User manual

Starlite
Operating Instructions
All-in-one

2GOSSEN Foto- und Lichtmeßtechnik
1 Preparation ............................................... 7
1.1 Battery ............................................................ 7
1.2 Self-test ........................................................... 7
1.3 Selecting the function groups:
DIP switches in the battery compartment ....... 8
2 Display panel ............................................ 9
2.1 The display panel and its elements ................ 9
2.2 Display duration ............................................ 10
2.3 Key Lock ....................................................... 10
3 Operating elements ............................... 11
3.1 ISO – ISO2; selecting the film speed ............ 11
3.2 Function .............................................. 12
3.3 Setting wheel ................................................ 12
3.4 Measuring buttons and ...................... 12
3.5 Measuring head with optical viewfinder 1° or 5°
Flat diffuser– spherical diffuser ..................... 13
4 This is how the Starlite works ............... 14
4.1 Incident and reflected light measuring .......... 14
5Meas. functions – Ambient light ..... 16
5.1 Aperture priority ....................................... 16
5.2 Exposure time priority ............................ 17
5.3 Exposure value EV ........................................ 17
5.4 Contrast measuring
in the t and EV functions ............................... 18
5.5 Averaging value AVR
in the t and EV functions ............................... 19
5.6 Selecting the exposure time values .............. 20
5.7 Taking measurements in the zone system ... 21
6 Measuring functions– Flash light ... 23
6.1 Flash light measuring .............................. 23
6.2 Flash calculation for changed meas. times ...24
6.3 Multiple flash calculation ................................24
6.4 Average value ................................................25
7 Taking a measuring outside the
measuring range – display range .........26
7.1 Taking a measurem. outside the meas. range ..26
7.2 Taking a measurement
outside the display range ...............................26
8 Setting and measuring correction values
and extension factors ............................27
8.1 Setting correction values ...............................27
9 CINE meter for cinematographers –
PHOTOMETRY ........................................29
9.1 Preselecting the Cine speeds ..................29
9.2 Taking measurements in the CINE function .29
9.3 Setting the shutter angle ................................30
10 Photometry .............................................31
10.1 Selecting the photometric display unit ...........31
10.2 Meas. the illumination Lux (lx)
or footcandle (fc) ............................................31
10.3 Measuring the luminance candela / m2(cd/m2)
or footLambert (fL) .........................................32
10.4 Measuring time-integral values
(lxs, fcs, cds/m2, fLs) .....................................32
11 Practical tips ...........................................33
12 Contrast and optimal exposure .............34
13 Technical data ........................................37
14 Serial interface ........................................39
15 Service .....................................................39

GOSSEN Foto- und Lichtmeßtechnik 3
Retractable diffuser
Measuring head
with optical viewfinder
ISO button
ISO 2 button
Socket for
the flash sync cord
Diffuser ring
reflected/incident light measuring
Display panel
Description
on page 9
Function buttons
Reflected light measuring 1°
Reflected light measuring 5°
Incident light measuring,
for setting of
Incident light measuring,
spherical diffuser
flat diffuser

4GOSSEN Foto- und Lichtmeßtechnik
Optical viewfinder
Measuring button
Measuring button
Eyelet
Serial interface
Setting wheel
for connection cord
Lens cover

GOSSEN Foto- und Lichtmeßtechnik 5
Serial number
Battery
DIP switches
Battery
compartment cover

6GOSSEN Foto- und Lichtmeßtechnik
Your Starlite is the top device in the GOSSEN-
product range and represents a real all-in-one light
meter. It combines a light meter for ambient and
flash light, a CINE meter for cinematographers as
well as a measuring instrument for lighting technol-
ogy and photometry. And the clarity of the operat-
ing control elements and the digital display is still
preserved. Functions used over and above the
normal metering can be individually integrated by
the user.
The Starlite can be easily converted into a com-
plete CINE meter for the cinematographer and
their needs.
Due to the microprocessor technology, the user
benefits from our knowledge on lighting technology
which we have gained over decades of experience
in the construction of light meters.
As a result of its precise calibration, the Starlite
provides very accurate measuring results and is
easy to operate.
Characterising of the Starlite:
– Splashwaterproof housing
– Digital stop display in 1/10 stop increments
– Automatic display illumination
– Shutter speeds in full or 1/2 time values
– Second ISO value
– Incident light measuring
with spherical/flat diffuser
– Reflected light measuring, option of 1° or 5°
– Flash measuring (cord/cordless)
Display of the ambient light portion
Flash calculation with different measuring times
Flash calculation for multiple flashes
– Analogue contrast display
with f/stops in 1/2 stop increments
– Averaging of up to 9 measuring values
– Storage of settings and measuring values
– Configurable EV correction
– Measuring in accordance with the zone system.
Direct display of the measuring values on the
zone scale
– Special CINE meter, settable for shutter angles
other than180 degrees, conversion
with formulas is not necessary
– Funtional range of photometry
Measuring of illuminance
and luminance with ambient and flash light
– Key lock

GOSSEN Foto- und Lichtmeßtechnik 7
1 Preparation
1.1 Battery
The Starlite works with a 1.5 V AA battery
(Alkaline-manganese or corresponding
rechargeable battery).
When the battery is running low, the display
appears in addition to the measured values as a
warning to the user.
At this stage, it is advisable to replace the battery
as soon as possible.
When appears on the display alone,
measurements can no longer be taken.
Replace the battery immediately.
To replace the battery, open the battery compart-
ment of the Starlite,remove the old battery and
insert the new one. Observe the "+" and "–"
polarity! Please close the cover of the battery
compartment.
1.2 Self-test
After the new battery has been inserted, the micro-
computer will carry out a self-test. Here, every
display segment of the display panel appears.
The self-test takes about 10 s. It can, however,
be interrupted before by pressing any button.
As soon as the self-test is complete, the factory
preset standard settings are activated.
Warning!
Do not view and do not aim the meter
directly at the sun
You may not only damage your eye, but also ruin
the light-sensitive cell.
ISO 100/21° 0/1.0
ISO2 50/18°
f5.6 t 1/125
EV 12 Flash f 1/60
f/s 24

8GOSSEN Foto- und Lichtmeßtechnik
1.3 Selecting the function groups:
DIP switches in the battery compartment
In addition to the standard functions, your Starlite
features a range of additional characteristics and
functions which can be selected using the
"DIP switches" in the battery compartment.
– DIP 1 Selection STILL – Photography
CINE and PHOTOMETRY
– DIP 2 Selection SHUTTER SPEEDS
(1/1 or 1/2)
– DIP 3 Selection DISPLAY UNIT photometry
– DIP 4 Selection Measuring function – ZONES
Zone System
fc fL
1/2 t-Steps
CINE
–
lx cd/m2
1/1 t-Steps
STILL
4
3
2
1
DIP 4
DIP 3
DIP 2
DIP 1

GOSSEN Foto- und Lichtmeßtechnik 9
2 Display panel
2.1 The display panel and its elements
1 Function
– Ambient light
– Flash light
2 Measuring head
– Incident light measuring
– Reflected light measuring
3 Meter functions
– Photography
– Cine / Photometry
4 Film speed ISO – ISO2
5 Digital display of the film speed
6 Display signal f– EV
7 Display signal Zone
8 Display – Function correction value
9 Display signal t– f/s
10 Battery check warning signal
11 Display signal seconds (s) – minutes (m)
12 Display signal average
AVR and M(memory)
13 Display signal photometry
– Illuminance (lx – fc)
– Luminance (cd/m2– fL)
– Time integral values
(lx*s – fc*s – cd/m2*s – fL*s)
14 Analogue scale
15 Left digital displays for
– f-stop (f)
– Exposure value (EV)
– Correction values
– Multiple flash calculation
– Average (f) – Number of measurings
–Zone
– Ready for flash (F)
– Photometric measuring values
16 Right digital display for
– Exposure time (t)
– Extension factor– correction value
– Flash calculation, number of flashes
– Cine speeds (f/s)
17 Zone scale
18 Aperture scale
6172
13 3 8 49 510
111817
1612151214

10 GOSSEN Foto- und Lichtmeßtechnik
2.1.1 Automatic display illumination
When the lighting conditions are poor (about EV 4
or less), the background lighting of the display is
switched on automatically for 10 seconds.
2.2 Display duration
If the Starlite display panel is idle for about 2
minutes, it is switched off automatically.
The measuring values and the preset values
remain stored in memory.
– By pressing anyone of the buttons, you can
recall the measuring value from the memory.
– By pressing the measuring button , a new
measurement is taken.
The measuring values of the last measurement
remain stored in the memory until a new measure-
ment is taken.
The Starlite has separate memories for
ambient and flash light measuring.
2.3 Key Lock
It makes sense to activate the key lock to avoid
switching on the Starlite by accident.
– Activating the key lock: press
ISO and ISO2 simultaneously.
OFF, ISO and ISO2 appear for 3 seconds on
the display. Then the instrument switches off
automatically.
If you press any button, OFF, ISO and ISO2 are
displayed again for 3 seconds.
– Deactivating the key lock:
press ISO and ISO2 simultaneously.

GOSSEN Foto- und Lichtmeßtechnik 11
3 Operating elements
3.1 ISO – ISO2
Selecting the film speed
You can select two different film speeds with the
ISO and ISO2 buttons.
– Select the film speed by pressing and holding
"ISO" or "ISO2". ISO or ISO2 will flash on the
display panel.
– Set the desired ISO value using the setting
wheel.
When another operating function is selected,
the preset film speed is retained in the Starlite
memory.
The film speed you have selected, either ISO or
ISO2, appears in the top right corner of the display
panel (ISO2 as long as the ISO2 button is pres-
sed).
When the ISO2 button is pressed, the converted
shutter speed/f-stop values are displayed on the
basis of the last measuring. Therefore, you no
longer have to carry out time consuming calcula-
tions when working with 2 films of different speeds.
If the film speed is changed, the last measuring
value is converted to the new ISO settings.
The selected film speed is memorized until it is
changed in accordance with the above mentioned
procedure.

12 GOSSEN Foto- und Lichtmeßtechnik
3.2 Function
With the function buttons you can select the meas-
uring modes ambient light or flash light .
Keep the function button pressed and select the
sub-functions time preselection t, f-number pre-
selection f or exposure value EV using the setting
wheel.
3.3 Setting wheel
The setting wheel allows you to change values
and functions.
– Presetting for ambient, flash and ISO
– Calling up shutter speed/f-stop combinations
after measuring. Multiple flash calculation
– Allocation of zones
– Selection of shutter angles in the CINE function
3.4 Measuring buttons and
With the measuring button you can trigger off
a new measurement and delete all previous
measuring values.
The measuring button is used for calculating
average values.
Function Buttons
Button
Button
Setting wheel

GOSSEN Foto- und Lichtmeßtechnik 13
3.5 Measuring head with optical viewfinder
1° or 5°
Flat diffuser– spherical diffuser
The measuring head is the optical control center of
the Starlite. The 270° rotating measuring head
provides the basis for effective working in practice.
Caution:
Never try to overwind the built-in lock by force.
Sooner or later this will cause the connection
between measuring head and basic meter to
break and will have to be repaired!
The following measuring modes can be selected
using the diffuser ring at the measuring head :
– Reflected light measuring 1°, spot measuring
– Reflected light measuring 5°
– Incident light measuring, flat diffuser
– Incident light measuring, spherical diffuser
The optical viewfinder with measuring angles of 1°
and 5° for reflected light measuring is also located
in the measuring head. Due to these measuring
angles it is possible to precisely focus on even the
smallest spots in the subject.
The viewing field is about 12°.
Reflected light measuring 5°
Incident light measuring,
Incident light measuring,
Diffuser ring
Reflected light measuring 1°
flat diffuser
spherical diffuser

14 GOSSEN Foto- und Lichtmeßtechnik
4 This is how the Starlite works
4.1 Incident and reflected light measuring
Your Starlite is designed for the enthusiastic
amateur as well as for professional use.
Its rotating measuring head is the optical "control
center", and the following measuring functions can
be set:
– Incident light measuring, diffuser raised:
spherical measuring characteristics
– Incident light measuring, diffuser lowered:
flat measuring characteristics
– Reflected light measuring with 5° measuring
angle through the viewfinder
– Reflected light measuring with 1° measuring
angle through the viewfinder
Thus, the meter can be conveniently used for all
measuring methods including the zone system.
4.1.1 Incident light – Spherical diffuser
Set "diffuser raised" with the diffuser ring at the
measuring head. The symbol appears on the
display.
Taking measurements using the incident light
method in particular can produces perfectly
exposed shots. With the incident light mode, the
Starlite measures with its diffuser the incident light
from the subject towards the camera.
This guarantees that the tone quality of the picture
is equivalent to that of the subject.
This is especially important for very bright or dark
subjects. Even under very difficult photographing
conditions, as for example with subjects which
have a lot of contrast, the incident light measuring
method is a much more reliable way of producing
well-exposed and professional pictures.
4.1.2 Incident – Flat diffuser
The lowered/retracted diffuser having a flat
characteristic is suitable for reproductions and
for taking measurements for special lighting tech-
nology and photometry.
For this function, the "diffuser lowered" with the
diffuser ring at the measuring head must be set.
Note!
☞When using the incident light mode with
the setting flat diffusor at the diffusor
ring, the display nevertheless will show the
symbol .

GOSSEN Foto- und Lichtmeßtechnik 15
4.1.3 Reflected light – 1° Spot measuring
For this function, the setting ring at the base of the
diffuser must be set to the "Reflected light – 1°
symbol. The symbol appears on the display.
In the viewfinder, the measured area corresponds
to the inner, smaller circle.
Your Starlite offers reflected light measuring
with 1° (spot measuring) via the viewfinder in the
measuring head. When you look through the
viewfinder, you can measure using the measuring
buttons and from the camera towards the
object. This way, even the details of a subject can
be accurately measured and analysed through the
viewfinder. Now, only the light reflected from the
subject is detected.
When using the reflected light mode, the measur-
ing values always depend on the reflection of the
subject!
As a result of this, bright subjects are reproduced
darker and are therefore not properly exposed.
If the exposure measurement is carried out in
accordance with the reflected light measuring
method, it is advantageous to use a grey chart
(18% diffuse reflection). Furthermore, you can
also be given the average values of up to 9 meas-
uring values. The different contrast measuring
values are displayed on the analogue aperture
scale. Subject contrast is measured with the
reflected light measuring method and displayed
by the Starlite on the analogue scale.
4.1.4 Reflected light– 5°
For this function, the "Reflected light measurement
5°" must be set with the diffuser ring at the
measuring head.
The symbol appears on the display.
In the viewfinder, the measuring area corresponds
to the outer, wider circle.
The functions and notes of chapter 4.1.3, page 15
also apply here.

16 GOSSEN Foto- und Lichtmeßtechnik
5Measuring functions – Ambient light
– Select with the left function button ambient
light (the last stored measuring value
appears in the display).
– Keep the function button pressed down and
select the corresponding sub-function using
the setting wheel. This function is displayed
in a frame .
– Set the desired value using the setting wheel
alone.
5.1 Aperture priority
– Press the measuring button to take a
measurement.
– The measured exposure time appears on
the right digital display. The f-number is auto-
matically adjusted to the time measured in
1/10 stop increments. Furthermore, the
f-number, which is rounded to 1/2 stop
increments, is displayed as a mark on the
analogue scale.
– Other shutter speed/f-stop combinations
can be selected using the setting wheel.
Note:
When preselecting f-stop, the stored values
of the last measurement are displayed in 1/10 stop
increments. These are, however, irrelevant, since
a new reading has to be taken.

GOSSEN Foto- und Lichtmeßtechnik 17
5.2 Exposure time priority
– Press the measuring button to take a
measurement.
– The measured f/stop appears on the left digital
display (resolution in 1/10 stop increments) and
is marked on the analogue scale, rounded to
1/2 stop increments.
– Select other paired f/stop-exposure time values
with the setting wheel.
– Instead of the full exposure time values,
also 1/2 time values can be set by activating
DIP switch 2.
5.3 Exposure value EV
– Press the button to measure.
– The measured exposure value EV
appears on the left digital display
(resolution in 1/10 stop increments) and
the f/stop is marked additionally on the
analogue scale rounded to 1/2 stops.
– Select other paired f/stop-exposure time values
with the setting wheel.

18 GOSSEN Foto- und Lichtmeßtechnik
5.4 Contrast measuring
in the t and EV functions
Contrast of the subject
Reflected light measuring
through the viewfinder
– Keep the measuring button pressed
and focus on the various areas of the subject to
be measured.
– The first measuring value appears on the left
digital display. It is constantly displayed as a
reference value (e.g. measurement on a grey
chart) during the course of the entire measuring
process. The actual measuring value flashes
on the analogue scale.
– After releasing the measuring button , the
measured subject contrast range appears on
the analogue scale.
Illumination contrast
with flat or spherical diffuser
– Keep the measuring button pressed to
measure the different light sources.
– The first measuring value appears on the left
digital display. It is constanly displayed as a
reference value (e.g. main light source) during
the course of the entire measuring process.
The actual measuring value flashes on the
analogue scale.
– After you release the measuring button ,
the total illumination contrast measured
appears on the analogue scale.

GOSSEN Foto- und Lichtmeßtechnik 19
5.5 Averaging value AVR in the t and EV functions
Reflected light measuring
through the viewfinder
– The first measurement is to be taken with the
measuring button .
– With the AVR measuring button you can
measure up to 8 further contrast spots.
The single measuring values are displayed on
the analogue scale (identical measuring values
are only displayed once, but are taken into
consideration when the average is calculated).
After each measurement with , the average
of all previous measuring values is displayed.
The average AVR appears on the left digital
display: f or EV with f-numbers in 1/10 incre-
ments and flashing on the analogue scale,
rounded to 1/2 stop increments.
In the middle of the display, the number
of measurements Mis displayed
(4 measurements in the example).
Incident light with flat or spherical diffuser
Correspondingly, you can determine the average
value of the illumination of the various lights with
the above mentioned procedure. To do this, you
can measure for example your main, fill-in and
background light individually in the studio.

20 GOSSEN Foto- und Lichtmeßtechnik
5.6 Selecting the exposure time values
In addition to the standard full time values, also
half time values (1/2 TV) can be set at some cam-
eras. For this reason, the Starlite can also be set
additionally to half time values.
The selection is made activating the DIP 2 switch:
– 1/1 full time values
Exposure times are displayed in 1/1 full time
values or when using the CINE function,
in the standard CINE film speeds.
– 1/2 half time values
Exposure times are displayed in 1/2 half time
values. With this function, additional
CINE speeds are displayed.
DIP 2