Light meters
Gossen Luna-Pro User manual
User manual for Gossen Luna-Pro. 22 pages in English. Read the original PDF, download or print a copy without registration.
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Document details
- Brand
- Gossen
- Model / document
- Gossen Luna-Pro
- Document type
- User manual
- Language
- English
- Pages
- 22
- File size
- 1.0 MB
- Category
- Light meters
- Document date
- Not specified in catalog
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Page 6 · Read text
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Your LUNA-PROdigitalF is an exposuremeter Featurescharacterizingthe LUNA-PROdigitalF:
with digitaldisplayfrom GOSSEN.lt measures - Measuresincidentand reflectedlight,
continuouslightand flash,and it coversa wide flash (withcord or cordless)and the levelof
measuringrangewith great accuracy. ambientlight
A wealthof knowledgein the area of light mete- - Microprocessorcontrolled
ring,basedon many decadesof experiencein - DigitalLCD displayin tenth stops
the manufactureof exposuremeters,is now - Analogcontrastdisplayin half stops
beingmadeavailableto the user,in the simplest - Storageof settingsand readings
mannerpossible,throughmicroprocessortech- - Programmableexposurecorrection
nology. - Recallof all possibleshutterspeed/aperture
As a resultof its precisecalibration,the combinationsof a given reading
- Apertureor shutterprioritypreselectionLUNA-PROdigitalF measureswith the greatest
- Extremelyconvenientto measureflashaccuracy,and operationis exceptionallysimple
- Coversthe entireCINE scaleand convenient.
(framesper second),includingthe
TV standard25 and 30 f.p.s.
- Warningwhen rangeis exceeded
- Automaticbatterycheck
- Auto off
. }i,lrfrt*.a'$i:ti.lt**i*td!!idl;ilehijlf4.x*{*:,41 *rbfil**€flr*a&.. - arView original page 6Page 8 · Read text
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1.2 Display duration 2 How the LUNA-PRO digitat F
The displayis automaticallyshut off, i.e. there functions
are no readings,if any controlbuttonof the 2.1 Preparations
LUNA-PROdigitalF has not been used for 2 mi- Batterynutes;the readingsare stored.
The LUNA-PROdigitalF operateswith a 1,5 V- The storedvaluesare recalledby depressing AA-typebattery(alkaline-manganesebattery). the functionor value buttons Sincethe meter'spowerconsumptionis minimal,- Renewedmeasurementis instantlypossible the batterywill last for a a long time. When the when the meteringbuttonis depressed. battery'scapacitybecomesexhausted,the leArl
symbolappearson the displayas a warningthatThe values of the last meter readingare stored the batteryhas to be replacedat the earliestpos-untila new meter readingis taken. sible opportunity.
The LUNA-PROdigitalF is fittedwith separate Measurementsceaseto be possibleif the dis-
memoriesfor continuouslightand flash measu- play only indicatesFnil. 16" batterymust be im-rement. mediatelyreplaced.
To change the batteryopen the batterycomp-
partmentof the LUNA-PROdigitalF. Remove
the exhaustedbatteryand insertthe new one.
Ensurecorrectpolarity,,+"and ,,-"! Push back
the batterycompartmentcover.Batterychan-
ping erasesall storedvalues.
r ' r - ' s ' r fView original page 8Page 9 · Read text
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Self-Checking routine 2.2 Incident and reflected light
measurement
With regardto its measuringpossibilitiesand trtrtrE@EBEUD operation,the LUNA-PROdigitalF was desi-
gned for professionaluse. Due to its adjustable
diffuserdome,the meteris easilyadaptedfor the 1iHE8,i"[EHii:1 . 4 2 2 . a ( 5 . 6 E 1 1 l E 2 2 : 2 q i E 4 S 0
l . r ' ! ' ! ' l . l . l ' l ' ! . 1 . 1 ' l r l r l dedicatedamateurand the professionalphoto-
grapher.
The microcomputerperformsa self-checking Incidentlight measurementleadsto particularly
routineas soonas the batteryhas been inserted. preciseexposures.With incidentlight measure-
Everypossibledisplaysegmentappearson the ment the LUNA-PROdigitalF is used with the
displayduringthis routine.The durationof the diffuserdome in place,and pointedfrom the sub-
self-checkingroutineis approximately10 secon- ject to the camera.This guaranteesa preciseex-
ds, but it can be interruptedby depressingany posurein conformitywiththe correcttonalvalues
button.The factory-programmedbasicsettings of the subject.This is particularlyimportantwith
are automaticallyadjustedas soon as the self- inherentlybrightor dark subjects.Evenin difficult
checkingroutinehas been completed. exposuresituations,for instancewith contrasty
subjects,incidentlightmeasurementwith the dif-
Basic values fuser resultsin far more accurateexposuresto
lso 100121" coR 0/ 1.0 satisfythe most discerningprofessionalrequire-
f 5.6 | 11125 ments.
E V 1 2 t Flash F 1/60
7
. ri&e* r*dhdt;grirgr*"r+.1&&ryView original page 9Page 10 · Read text
www.orphancameras.com Measurementby the incidentmethodis far more lncidentlightmeasurement,i.e.with diffuser,also accurateand reliableto establishthe correctex- givesa precisereadingof the brightnessrangeof posuresettingthan the calculatingof a meanva- the lighting.Bothkindsof lighting- flashand con- lue obtainedwith the reflectedlight tinuouslight- are measuredwith greataccuracy measurementin your camera.In the lattercase, by the incidentlightmethodwith diffuser. the readingdependsuponthe rangeof contrasts Parallelto this,the LUNA-PROdigitalF alsoof- of the subject.However,there is not alwaysa fers the reflectedlightmeasuringmethod.In this uniformdistributionof brightand dark areasof modethe diffuserdome is pushedasideto the equal importancewithinthe subject.Incidentli- left or right,and the meteris pointedfrom the ca- ght measurementis also imperativewith inac- mera towardsthe subject.The meter now only cessiblesubjects. measuresthe lightreflectedby the subject.Con- For this purposeit is necessaryto selecta point sequently,the readingalwaysdependsuponthe that has the same lightinglevelas the subject. inherentbrightnessof the subject!!This means And then a meterreadingis takenthat lies paral- that inherentlybrightersubjectsare not precisely lelwith the projectedconnectingline between measuredand thereforerendereddarker.lf rea- the actualsubjectand the camera.This very dingsare to be takenexclusivelyby the reflected convenientmethodof light meteringat a point lightmeasuringmethod,then it is advantageous with the same lightinglevelis highlyrecommen- for the professionalto use a grey card (1B "/" re- ded for outdoorshots.The measurementis per- flection)in this mode.The reflectedlightmethod formedwith a compiete,,180o"turn in f rontof the is usedto measurethe subjectcontrastwhich is cam$a so that the readingis taken with the me- displayedby the LUNA-PROdigitalF on its ana- ter pointingtowardsthe camera,i.e.oppositethe log scale (see Section3.2.4 Contrastmeasure- actualpictureshootingdirection. ment,page 12). IView original page 10
Page 11 · Read text
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3 The individualfunctions 3.2 Measuringfunctions -
3.1 Settingthe film speed Continuous light measurement
- Shutter priority in functionf:
t t | :vcoa lrsol a readingis taken for the correspondingaper-
ture (seeSection3.2.3Shutterprioritymode- Llilt Continuouslightmeasurement,page 11) r:rl - Contrast measurement in functionf
(see Section3.2.4 Contrastmeasurement,
- Selectlsol with the functionbuttons page 12)
- Adjustthe requiredISO value with the - Aperture priority in functionf:
value buttons(displayleft: DIN value, a readingis taken for the correspondingshut-
right:ASA value) ter speed (see Section3.2.5Aperturepriority
mode,page 12)
- Exposure value measurement in functionOnce the film speed has been set, it is transfer-
red to the memoryof the LUNA-PROdigitatF lE9: the shutterspeed is preselectable,and
when the meter is adjustedto any operating the apertureis given as an analogvalue (see
function,and remainsvisibleon the top right- Section3.2.6ExposurevalueEV, page 13)
handside of the digitaldisplay. - CINE (framesper second)in functionf : (see
Any changeof the film speeddirectlyinfluences Section3.2.7CINEscale(framespersecond),
the storedpairedapertureand shuttervalues. page 13)
The selectedfilm speedis retainedin the memo-
ry until it is changedin the describedmanner. Selectthe requiredfunctionwith the correspon-
dingfunctionbuttons.
.,srliilcr*View original page 11Page 12 · Read text
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9.2.1 Flash readings Readingscan be taken with or without synchro-
nizingcable.When used in conjunctionwith a
@ t f :v coarso lil;l synchronizingcablethe flash is fired by depres-
@ Outton- the flash is automaticallyfi- r t'fn s sing the r- fill red and measured.
- Select I with the functionbuttons
- Adjustthe desiredsynchronizingspeedwith
the value buttons.Synch rangefrom 1 s to
1/1000s (including1/90s)
I f evcoarso ,{iln - Depressthe measuringbutton@. a LUNA-PROdigitalF is operablefor metering t ''h]J s for a periodof 45 s (meterreadinessprevails ![,n
I t.4 2 2 . 8 4 s . E 8 1 1 l E 2 2 ! 2 4 t 6 1 9 0 as long as F remainsvisibleon the display)
| ;fi - Firethe flash
- The measuredaperturestop (fromthe sum to- tal of flash and continuouslight)appearson 1d
the left digitaldisplay,and as a flashingmark
on the analogaperturescale.The aperture
stop for the shareof continouslightis additio-
nally indicatedon the aperturescale (in our
examplefi8).View original page 12Page 13 · Read text
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3.2.2 Multiple flash 3.2.3Shutterprioritym6de'
Continuouslight measurement
, lflt Evconrso i[t] @'Jilxt f :vcon rso Itil Ll F 'Ll '5til s | 1.42 tr2.8 4 s5 I 11 rE 22!245 6490
Occasionallythe lightoutputfrom a singleflash
may not be sufficientto enableyou to work at the - Selectf with the functionbuttons(the last
apefturedesired.Whenthis happens,simply storedvalue appearson the display)
push the top valuesbuttonuntilthe desired - Adjustthe desiredshutterspeedwith the va-
f/numberappearsin the display. lue buttons
) The digitalshutterspeed displaydisappears,to - Measureby pressingthe meas.button@
- The measuredaperturestop appears be replacedby informationon the numberof flas-
) hes that have to be firedfor the desiredf-stop on the left-handdigitaldisplay
(e.9.:F4=4flashes). (accuracy:1/10 stops),also as a rounded-off
mark in the analogaperturescale The LUNA-PROdigitalF will calculateup to a - Selectalternativeaperture/shutterspeed- maximumof 10 flashsequences.
combinationswith the value buttonsView original page 13Page 14 · Read text
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3.2.4 Contrast measurement 3.2.5 Aperturepriority mode
'Ll.[Jr, lE t Ev''IililcoRrso itlfi s 'LI.tn, t m Ev"'Iiltconr5o il^]il s
1 1..2 2.8r , 3,1 5s5, rI ' l il fi n 32 45 64 gA 1 1 . 4 2 2 . 8 4I s . E8 f i 1 6 2 2 3 ? 4 5 6 4
- Selectf with the functionbuttons - Select!_l with the functionbuttons
- Keep the measuringbutton@ depressed - Set the desiredaperturewith the value but-
whileaimingthe meterat variousareasof the tons.The intermediate1/10stopvaluesstored
s u b j e c t . T h e a n a l o g a p e r t u r e s c a l e d i s p | a y s f r o m t h e | a s t m e a s u r e m e n t a p p e a r w h e 'r
the f-stopseriesbetweentwo extremevalues, apeftureis preset.These are invalidbecause
and with the actualmeasuredvalue flashing. the valid 1/1Othstopswill only appearafterthe
The first measuredf-stopis displayedon the next meter readingis taken.
left-handside of the display(it remainsdis- - Measureby pressingthe meas.button@ c
playedas a referencevalue (e.9.of a - The measuredshutterspeedappearson the
greycard)). right-handdigitaldisplay
After the measuringbuttonis released,the - Automaticadaptationof the aperture
entiremeasuredcontrastrange is displayed in 1/10 stopsto the measuredshutterspeed
on the analogaperturescale,and the last - Selectother pairedaperture/shuttervalues
measuredvalue will ceaseto flash. with the value buttons
1 2
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The displayedapertureappliesto a 180'shutter 3.3.1 Display outsid€ the display range
blade.Entera COR valuein the functionEod for lf the symbol ll or l-l appearson the rightor left
other shutterbladesas an extensionfactor. digitaldisplayit indicatesthat the taken reading
V = 180':openapertureangle is outsidethe meter'sdisplayrange.
With Ll actuatevaluebutton 6 to enterthe dis-
3.3 Measurementsoutsidethe play range.
measuringrange
, f B Ev coarso ill[
t I m EvcoR'so i[-!l] f I n - . t ' s
t . x i i , l
| 1.4 ? 2.8 4 s.E 8 ' l' t15 22 32 45 64 90 I x
With n acuatevaluebutton @ to enterthe dis-
- The LUNA-PROdigitalF will not produceany play range.
usefulreadingsoutsideits measuringrange
- lf it is too dark or too bright,an E (= Error)ap- r E I EvcoRrso iilti
pearson the left-handdigitaldisplay,and alo-
ngsideit ll for too dark, or t-l for too bright ,',.,:],,,:,F,[Til:,
1 4
.+i#"' '
: I . --:l-s .-,,rdrhrd*le- dView original page 16Page 17 · Read text
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3.4 Setting and measuring correction values The extensionfactoris shown in the right-hand
(see Section3.4.4lmportantremarkscon- digitaldisplay,and the correctionvalue in stops
cerningcorrectionvalues,page 17) in the left-handsection.
Enterin 1/1Othstops(smallfigure)withina range
of +7.9 exposurevalue stops. 3.4.1 Setting correction values
A figureprecededby ,,-" indicatesan exposure
t t 1 :v lconlrso inii extendingcorrection.
Example:
-3.1 stopsequalfactor8.6. - J i H E
In the event of an exposureshorteningcorrec-
- Selectlconl with the functionbuttons(the last tion, only the left-handdisplayappearsas an ex-
valid correctionvalue appearson the display) posurevalue differencein stops.
- Enteror changethe correctionvaluewith the
value buttons
3
-rD
t'/
-.-
1
a.
7
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3.4.2 Measuring correction values Insertthelight-reducingfilter(e.9.neutraldensity
filter)in the opticalpath,and pressthe measu-
, t f :v liiil rso lrat-at,Ju ring button.
The light reducingfactorin stops,and the exten- - - sion factor,automaticallyappearon the display. r F I Pressingthe functionbuttonstransfersthe
correctionvaluesto the memoryof the
LUNA-PROdigitalF.
The box aroundlconl stillappearswhen a corre-
, I f .u F6-il so ill_[l tion valuewas entered.
t t 8." lf,on-lrsoinn In It 'L! ''5lj!l s I 1 . 4 2 tn2 . 8 4 s . 6 8 t l t 6 2 2 3 2 4 5 6 4 9 0
Correctionvaluescan alsobe directlymeasured.
However,measurementdoes requireconstantli-
The COR value is now automaticallyconsideredght.
in all subsequentmeasuringfunctions'Depressionof the measuringbuttoninitiatesa
referencemeasurementthat is identifiedon the
digitaldisplayby rF -.
1 6View original page 18Page 19 · Read text
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3.4.3 Cancelling correction values 3.4.4 lmportant remarks concerning
correction values
, I f .u li6-il ,so illl:! The LUNA-PROdigitalF is a precisionmeterca-
r libratedwith greataccuracyto provideexact ex- ,- i- posuredata.Shouldyou stillnot be satisfiedwith
the results,then you shouldrememberthatthere
are independentvariablesthat can influencethe
- SelectLconlwith the functionbuttons successof your exposures.
- Pressmeasuringbutton(displayrF -) For instance:
- Selectany otherfunctionwith a function - the ,,true"speedof your film can deviatefrom
button that on the pack
- Correctionvalue is cancelled,and the box - the ,,true"shutterspeedsand f-stops
aroundCOR disappears on your cameracan differslightlyform
the ratedvalues
- Deviationscan arisewhenthe film is processed
To above must be added purelysubjectivefac-
tors and mattersof personalpreferencein the
assessmentof the finishedphotos.However,
you can calibrateyour LUNA-PROdigitalF to
characteristicsof your camera,your brand of
film, your processingmethods,and to your pro-
jector.
1 7
. *iilriri&*,View original page 19Page 20 · Read text
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We recommend the following procedure: 4 Service remarks
Take the readingsof a few normalsubjectswith In the eventthatyour LUNA-PROdigitalF is not
the utmostcare by the reflectedand incidentlight workingto your completesatisfaction,please
measuringmethods,and take five shotsof each send it to:
subjecton colourreversalfilm. The first picture Bogen PhotoCorp.
shouldbe exposedwith the exposuresettings 565 E. CrescentAve.suppliedby the LUNA-PROdigitalF. The expos- Ramsey,NJ 07446-0506
ure settingsfor the remainingshots are then
increasedand decreased,respectively,by half
an f-stopand then a fullf-stop.Make a note of
the shootingconditions.These must not change
whilethe five shotsare beingtaken.Now select
from the processedpicturesthe one you consi-
der to be optimaland compareits settingswith
the meterreadings.
lf you find that you preferexposurestaken with
settingsthat differfrom those suppliedby the
meter,then these settingscan be programmed
into your LUNA-PROdigitalF. With your correc-
tion,the LUNA-PROdigitalF will give precise
readingsto produceoptimalexposureresults.
a
I
;1 8
5H
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www.orphancameras.com Printedin Germany. Subjectto changewithoutnotice Bogen PhotoCorp. 565 E. CrescentAve. P.O. Box 506, Ramsey,NJ 07446-0506 Phone(201)818-9177 Fax (201)818-9177 GOSSEN -',*.Er-View original page 22
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