Light meters
Gossen Digipro F User manual
User manual for Gossen Digipro F. 24 pages in English. Read the original PDF, download or print a copy without registration.
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- Brand
- Gossen
- Model / document
- Gossen Digipro F
- Document type
- User manual
- Language
- English
- Pages
- 24
- File size
- 1.6 MB
- Category
- Light meters
- Document date
- Not specified in catalog
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Instruction Manual GOSSEN Digipro F Lightmeter for Flash and Ambient Light 15176 1/9-04View original page 2
Page 4 · Read text
Contents Page Page
1 Display ............. 5 3.3 Measurement outside the
1.1 The display and its elements....... 6 Measuring range......... 14
1.2 Durationofdisplay....................... 6 3.3.1 Display outside the display range.14
3.4 Setting and measuring2 The Functioning of the Digipro F 6
2.1 Preparations................ 6 correction values........ 15
2.2 Incident and reflected light 3.4.1 Setting correction va|ues............. 15
measurement............... 7 3.4.2 Measuring correction values....... 16 3.4.3 Cancelling correction values...... 16
3 Theindividualfunctions......... I 3.4.4 I mportant remarks concerning
3.1 Setting the film speed ............... .. I correction values........ 17
3.2 Measuringfunctions................... I
3.2.1 Flash readings.... .......10 4 18
3.2.2 Multiple flash... ...........10 5
3.2.3 Shutter priority mode... ................ .1 1 Declaration of conformity......... 203.2.4 Contrast measurement ............ ....1 1
3.2.5 Aperture priority mode.. ............. ...12 Brief lnstructions
3.2.6 Exposure value EV............. ........ ..12
3.2.7 CINE scale (frames per second).. 13
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1 Display
1.1 The display and its elements
1 Functions
o Flash measurement
o Ambient light measurement with shutter priority ;HIgHIH,HHil;
2,8 4 F,6l8l 11 ft Al ? 45 04 f0 o Ambient light measurement with r l,{ x r lr lr lr lrlllllr lr lr lh lr lr lr aperture priority
r Ambient light measurement with
read-out of exposure values (EV)
o Entering the correction values
. Setting the film speed 7 Display identification t for exposure time
2 Digital display of film speed DIN / ISO 8 Warning sign BAT for battery check
3 Display identification f for aperture 9 Display identification ,,1" fot fractions of a
4 Display identification EV for second
exposure value 10 Right-hand digital display
5 Analog aperture scale . Exposure time t
6 Lefthand digital display . Exposure extension factor
. Aperture f . CINE (frames per second); symbol ;
. Exposure value EV . Film speed in ISO o Correction values 11 Unit symbol m = minutes . Multiple flash o Film speed in DIN 12 Unit symbol s = seconds
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1.2 Duration of display
lf for approx. 2 minutes none of the buttons of the Digipro F is pressed, the meter will be switched off
automatically. The measuring and setting values stored in the memory will be maintained.
o The stored values can be recalled by depressing the function or value buttons
o New 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 Digipro F is fitted with separate memories for continuous light and flash measurement.
2 The Functioning of the Digipro F
2.l Preparations
Battery
The Digipro F operates with a 1,5 V AAtype 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 compartment of the Digipro F. Remove the exhausted battery
and insert the new one. Ensure correct polarity ,,*" and ,,-"! Push back the battery compartment cover.
Battery changing deletes all stored values.
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Self-Checking routine The microcomputer performs a self-checking routine as soon as the Etrtr]E@ ETESEC battery has been inserted. Every possible display segment appears in the display during this routine. The duration of the self-checking IE,BB;'E,EB0; routine is approximately 10 seconds, but it can be interrupted by pressing any button. The factory programmed basic settings are automatically displayed as soon as the self-checking routine has been completed. Basic values ISO: 100121o f: 5.6 COR: 0l 1.0 EV: 12 t: 11125 Flash: f 5.6 1/60 2.2 Incident and reflected light measurement The features and measuring capabilities provided by the Digipro F are ideally suited for the dedicated amateur and the professional photographer. The swivel head will rotate through 180 degrees. This feature allows the photographer to read the values measured in the display, while the measuring head is directed towards the subject or light source. When you remove the diffuser dome, reflected light and contrast measurements can easily be taken. GOSSEN Foto- und Lichtmesstechnik GmbHView original page 8
Page 9 · Read text
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 oi tne subject.
However, there is not always a uniform distribution of bright and dJrk areas of equal importince 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 tevel 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 measurerient 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 lighting kinds of are rersrr6d with gr6at a".rr".i by the - flash and ambient light - incident light method with diffuser.
ln addition to this, the Digipro F also offers the reflected light measuring method. In this mode the
diffuser dome must be taken off and the meter is pointed from the came-ra towards the subject. The
meter now only measures with angle of 25 degrees the light reflected by the subject. Consequenly, the
reading always depends upon the inherent brightness of tne subject!l This reun, that inherenly
brighter subjects arenot precisely measured and therefore rendered darker. lf readings are to be taken
exclusively ovlh-e reflected light measuring method, then it is advantageous for the pr6fessional to use
a grey card (18 % reflection) in this mode. The reflected light method ii used to measure the subject
contrast which is displayed by the Digipro F on its analoglcale (see Section 3.2.4 Contrast
measurement, page 11).
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3 Theindividualfunctions
3.1 Setting the film speed , t t,,u"o* Sl
o Select ISO with the function buttons qnno Set the required ISO value with the value buttons Il (display left: DIN value, right: ISO value)
Once the film speed has been set, it is transferred to the memory
of the Digipro F and maintained when the meter is 6et to any operation
function. lt remains visible on the top right-hand side in the digital display.
Any change of the film speed directly influences the stored paired aperture and shutter speed values.
The selected film speed is retained in the memory until it is changed in the described manner.
vt's3.2 Measuring functions - Ambient light measurement WaLu' hik"6/
Select the required ambient light function with the corresponding function buttons.
o Shutter priority in function t: a reading is taken for the corresponding aperture
(see Section 3.2.3 Shutter priority mode - Ambient light measurement, page. Contrast measurement in function t: (see Section 3.2.4 Contrast measurement, 1page1) 1 1)
. 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: preselect the shutter speed and the
aperture is given as an analog value (see Section 3.2.6 Exposure value EV, page 12)
o CINE (frames per second) in function t:
(see Section 3.2.7 CINE scale (frames per second), page 13)
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3.2.1 Flash readings
Readings can be taken with or without synchronizing cable. When 6t+,, coR'*t{[!B
used in conjunction with a synchronizing cable the flash is triggered by Spressing the M button-the flash is automatically triggered and measured. F "E[J
o Select ? with the function buttons
o Adjust the desired synchronizing speed with the value buttons.
Synch range from 1 s to 1/1000 s (including 1/90 s)
. Press the measuring button M. [l t f ,, ,,,* t- {09
Digipro F is operable for metering for a period of 45 s (meter s !5c "6[] 2 :,t { s.; readiness prevails as long as F remains visible in the display) 'I llo Trigger the flash tli ;r $ s ! a at I
The measured aperture (total of flash and ambient light) appears
in the left digital display, and as a flashing mark on the analog aperture scale. The aperture for
the share of ambient light is additionally indicated on the aperture scale (in our example f/8).
3.2.2 Multiple flash
Occasionally the light output from a single flash may not be sufficient to ru coR LIEBenable you to work at the aperture desired. In that case, simply Vtr '""
push the top value button until the desired f/number appears in thedisplay. The digital display of the time t disappears and the number of 'J& Fr{
flashes required is indicated (e.9.: F4 = 4 flashes).
The Digipro F will calculate up to a maximum of 10 flash sequences.
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priority mode3.2.3 measurement Shutter light - Ambient u, coR rso ![ nIJ (the the function buttons with last stored value appears ?@fr Select
s on the display) *tr,[, '58[. Adjust the desired shutter speed with the value buttons t l,r ? ?,8 { s,ao Measure by pressing the meas. button M tl
The measured aperture appears in the left-hand digitaldisplay
(accuracy: 1/10 stops), also as a rounded mark in the analog aperture scale
Select alternative aperture/shutter speed combinations with the value buttons.
. 3.2.4 Contrast measurement
*" l0Bo Select t with the function buttons 2 filf .u "o*
s Keep M pressed the measuring button. 'Ll,[a 'I[][ while aiming at various the meter areas of the subject. The analog
aperture scale displays the f-stop series between the two extreme l[rIa8r!,a8u8aot{iI rlir l. I
values and with the actual measured value flashing. The first
measured f-stop is displayed in the left-hand side of the display. lt remains displayed as a
reference value (e.9. 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.
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3.2.5 Aperture priority mode
o Select f with the function buttons ? tffllu coa rso lSf!
o Set the desired aperture with the value buttons. The intermediate s 1/10 stop values stored from the last measurement appear when 'r-{,iln'I[][
9a the aperture is preset. These are not valid, because the valid and I l,{ i 2,8 {t 5,{ 8 ll ll n 3a 6 T
actual 1/1Oth stops will only appear after the next meter reading is
taken.
o Measure by pressing the meas. button M
o The measured shutter speed appears in the right-hand digital display
Automatic adaptation of the aperture in 1/10 stops to the measured shutter speed
o Select other paired aperture/shutter values with the value buttons.
3.2.6 Exposure value EV ? t f [!,"* '."1{[!0o Select EV with the function buttons
. Measure by pressing the meas. button M s '5[il The measured exposure value appears in the left-hand digital EVI l,{ lil display (accuracy: 1i10 stops)and the aperture as a rounded-off I '
mark on the analog aperture scale
o Select with the value buttons other paired aperture/shutter speed values corresponding with this
exposure value.
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", 3.2.7 CINE scale (frames per second) ,", o Select t with the function buttons .2 ffi g r,u con rso lg[] o Select the desired Cine speed (f.p.s.) by increasing the *
shutter speed setting beyond 1/8000 sec. After approx. lE*2 2.8 | 5,6 t 15/ll U e ! G al I 1 second the meter switches over to CINE speeds. I 1,,{
The symbo / appears in the display. The CINE speeds
can be preset between B and 64 frames/second.
Measure by pressing the meas. button
The measured aperture appears in the lefthand digitaldisplay (accuracy: 1/1Oth stops)and
additionally as a rounded-off mark on the analog aperture scale
The displayed aperture applies to a 180 degrees shutter blade. Enter a COR value in the
function for other shutter blades as an extension factor. V = 180 degrees / open aperture angle.
1 wbtb"f?vJn'i'v5
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3.3 Measurements outside the measuring range
o The Digipro F will not produce any useful readings outside .o* ,.^'"" tnntlJu y' t fl.u its measuring range
lf it is too dark or too bright, an E (= Eror) appears in the
left-hand digital display and alongside E,-,
it g for too dark, or n for too bright.
3.3.1 Display outside the display range
lf the symbol Ll or | | appears in the right or left digital display 2 1 lTleu "on '* !l![it indicates that the taken reading is outside the meter's displayrange. * sWhen Ll actuate value button ^ to enter the display range. f,ilE'L
When f'l actuate value button - to enter the display range. ,Bf re coR ,* lllfi
:,, ,T ,,,',F,["T.q "
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3.3 Setting and measuring correction values
(see Section 3.4.4 lmportant remarks concerning correction values, page 17) I
values Setting correction 3.3.1
COR with the function . Select buttons (the last valid conection ttf '" El r* l[!g
value appears in the display) o Enter or change the correction value with the value buttons -J fl,5
The extension factor is shown in the right-hand digital display, '
I and the correction value in stoos in the left-hand section.
Enter in 1/1Oth stops (small figure) within a range of t7.9 exposure values.
A figure preceded by ,,-" indicates an exposure extending correction.
q Example: -3.1 stops equalfactor 8.6.
In the event of an exposure shortening correction, only the left-hand display appears as an exposure
. u"lue difference in stops.
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3.3.2 Measuring correction values
Correction values can also be directly measured. An evenly illuminated Z t f o"EI 's" l[0
surface and constant light level are required. Measure in the
reflected mode. rrr. Press measuring button M and get a reference reading:
displayed as rF--
o Weaken light by holding e.g. a grey filter in front of the measuring
aparture. Press meassuring button M t t r',EI ,* ![C
The light reducing factor will be diplayed automatically in stops
at the right, as extension factor at the left. - In e,[]Pressing one of the function buttons will transfer the correction value
to the memory of the Digipro F. The COR value is now automatically
taken into account in all subsequent measuring functions. The frame
rso ![![!around COR is retained as a reminder that a correction value was ? t B ''" ffil
entered. s 'tiln'5ilil3.3.3 Cancelling correction values
I. Select COR with the function buttons I t,4:1,8 | 5,6 8 ll $ A 3t 45 it S
. Press measuring button (display rF -). Select any other function with one of the function buttons.
. Correction value is cancelled, and the frame around COR ? t r t,@ ,so ![![l disappears.
trrr
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3.4.4 lmportant remarks concerning correction values
I I The Digipro f 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
o the ,,true" shutter speeds and f-stops of your camera can differ slightly form the rated values
o Deviations can arise when the film is processed.
I Also there must be added purely subjective factors and matters of personal preference in the
assessment of the finished photos. However, you can calibrate your Digipto F to characteristics of
? your camera, your brand of film, your processing methods, and to your projector.
W'' Bt'i(tr$e uJ we recommend the following procedure ,
I Take the readings of a few normal subjects with the utmost care Q measuring methods, and take five shots of each subject on colourby reversalthe reflectedfilm. andThe incidentfirst picturelight
should be exposed with the exposure settings supplied by the Digipro F. 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.
lf you find that you prefer exposures taken with settings that differ from those supplied by the meter,
then these settings can be programmed, as a correction, into your Digipro F. With your correction, the
Digipro F will give precise readings to produce optimal exposure results.
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4 Servicing and Repairs
No special maintenance is required, if the Digipro F is handled correctly.
Keep the outside surface clean. Use a slightly dampened cloth for cleaning. Do not use cleansers,
abrasives or solvents.
Should the meter nevertheless not work to your satisfaction,please send the Digopro F to:
Bogen lmaging Inc.
565 East Crescent Ave.
PO Box 506, Ramsey, NJ 07446-0506
Telephone: (201 ) B1 8-9500
Fax : (201) 818-9177
www.bogenimaging.us
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. *;J&ai2-a,...-.;r, .- iView original page 19Page 20 · Read text
Technical Data
Measuring methods lncident light / Reflected light / Contrast measurement
'l Flash (cord/noncord)
Indication of ambient light share
Calculation for multiple flash
Programmable exposure correction
Sensor Silicon blue cell photodiode
Measuring range LW -2.5 to +18 (with ISO 100121 ')
Repeatable accuracy 10.1 EV
Exposure times 1/8000 s to 60 min
Aperture stops f/1 to f/90 9/10
Measuring range flash 'f l1 Io fl9o (with ISO 100121"1
Flash synch speeds 1 to 1 11000 including 1/90 s (meas. time) i CINE values B to 64 including 25 and 30 TV)
+7.9 Adjustable and measurable correction values -7.9 to
Extension factors 1.0 to 240
Film speeds ISO 3.2/6" to 8000/40'
Acceptance angle for reflected light 25'
Battery 1 x 1.5 V AA-type, battery condition indication
Accessories Case, neck strap, battery and operating instructions
Dimensions ca.65x118x19mm
Weight ca. 95 g (without battery)
Electromagnetic Compatibility (EMC): The Digipro F meets the
Specifications 89/336/EWG dt. 01.01.1996
GOSSEN Foto- und Lichtmesstechnik GmbH
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GOSSEN
CINE scale (frames per second) Digipro F
Select t with the function buttons - increasing Brief Instructions
the shutter speed setting beyond 1/8000 and
preset the CINE speeds with the value buttons
o Measure by pressing the M button
o The measured aperture appears in the Socket to connect Swivel head
left-hand digital display the synchronising
cable
Multiple flash
When the light output from a single flash is not
sufficent for you to work at the aperture desired, the DisplayDigipro F is able to automatically calculate the
necessary number of flashes: Measuring bufton M
(desired aperture e.g.' F4 = 4 flashes) Buttons to select
required Buttons to adjust the the
functiono Press value button ^ vatues
Battery
1,5 V Mignon Typ AA (alkali-manganese)
o Attention to warning BAT - change baftery
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I
,l l
1l/ light ] Gossen Foto- und Lichtmesstechnik GmbH is also a leading provider for other interesting
I measuring instruments:
. The Starlite: is a multifunction lightmeter for flash and ambient light with a multitude of functions
and capabilities, but remarkably easy to use. The Starlite - All-in-one - measures incident and
reflected light, contrasts in the subject and of the lighting, in the Zone System, in CINE filming
applications; also other interesting light values - such as Lux and footcandles. lt is provided with
a swivel head with optical viewfinder and adjustable measuring angles of 1 or 5 degrees,
automatic display illumination at low light levels, splash water proof housing.
The Starlite will meet and even exceed all the wishes and expectations the professional
'J photographer, the CINE filmer and the enthusiast may have.
. The Ultra-Spot 2: is a true spotmeter with a measuring angle of 1 degree, for flash and ambient
light; high quality vieMinder, especially suited 'for Zone System metering; correction values are
considered in the measurement; necessary changes in the developing of the film are
subsequently also indicated. Automatic averaging of upto 10 individual values measured is
provided. ldeal for photgraphers enjoying and meeting the challenges of light and shadow, while
viewing the precise measuring spots in the subject, also the values measured and preset in the
optical system.
h- q-h-,. &ll+;l* uS '
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The Color-Pro 3F: is a digital 3-colour meter and filter indicator for measuring the photographic
colour temperature of flash and also daylight, artificial light (incandescent and halogen lamps) as
well as fluorescent tubes. Read-out in degrees Kelvin. Additional capabilities: Readings of the LB
filters (can be selected in Mired or Kodak Wratten Filter types). and also
CC Filters, both required for pictures, having true colour rendering, without colour casts.
Additional useful functions: measuring and reading the illuminance (Lux) and flash power
(Lux/seconds). Due to ist high functionality and simplicity of use, it is well suited for photgraphers
working in industry, using colour conversal material, and above all digital photography.
You.willfind this Instruction Manual also in other languages in the Internet on our website:
www.gossen-photo.de
Printed in Germany - Subject to change witout noticeBogen lmaging Inc. gossEN
565 East Crescent Ave.
PO Box 506, Ramsey, NJ 07446-0506
Phone : (201) B18-9500
Fax: : (201) 818-9177
www.bogenimaging.us
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