leica r3 exposure booklet

8/15/2019 Leica r3 Exposure Booklet.

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The LEIGARs hastwo autornatic exposure-measuring rnodes3Selective and Integrating.Because two are betterthan ortG.

TEITZ MeansWorld Wide.

Precision.

l z z t . t t t - t t s e n s t .

Selected-area measuremgnt2e'28rrF

Thedual measuring ethodof he electronic EICAR3 offers

numerous dvantages: ever before has t been possible ouse a LEICA@s simply as the LEICAR 3 and without anytechnical nowledge. everbefore has a LEICA ffered omanypossibilities ndat he same imesimplificationss heLEICAR 3. In addition o many details, xposure measure-mentwas sing ed out oradaptation o practical hotog aph crequirements:Only the LEIGAR 3 can boast of largefield integrating andselected.arlea measurement with automatic data storage.Without he need or taking he camera otfyour eye you canswitch over within a fraction of a second. The electronicmechanism nstantly alculates he conect exposure, hichis indicated with shutter speed and aperture n the view-finder.Even our irst ilmwillgiveyou much pleasure ndconfirmour ambitious laimof perfect pictures withouttechnical roblems .

oLargefeld ntegrating measurin$'ai'ea


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Selected-areameasurement:

Only selected measurement illbe successful when thebackground as shown in our examples below is eithervery bright or very dark and therefore bound o falsify hereading fthe exposure meter. Because o exposure me-ter can discriminate etween lackand white, .e.brightordark, by itself. t can orthis reason be calibrated nly ora mean greyvalue,wh ch corresponds o about 18% ef ec-ting power of a grey area. Selective measurement s here-fore inidicated whenever he contrast ange s very highwithuneven istribution f brightand dark areas or whenthe sun illuminates ertain picture portions ike a spot-light,with ndoor hots against right windows, ithviewsthrough gate, rwhen open ight sources nd other dazz-ling influences re to be eliminated. etails of subjectswhich represent he mean grey value an be measuredwith he selected-area ode. t s used when t s necessaryto take ulladvantage f the creative ossibilities f lightand when a certain portionof the subject has o be exactlyexposed.

sctr4-. 1.- : :

ln he pictures fthe op row he ace was chosen as he measuring eldof heexposure meter and a correctly exposed picture obtained. he bottom owshows aulty esults, roduced when he bright or dark surrounding ield s

included n the measurement. he ace will hen be either over-or under-ex-posed.

'- Registered Trademark.

Design subject to alterations without notice.

ERNST LEITZ WETZLARG MBHD-6330Wetzlar Tel.:

06441) 29-1 Telex:483 849 eiz dSubsidiaries: rnst Leitz Canada) td.,Midland,Ontario

Leitz-Portugal .A.R.L., ilaNovade FamaligSo

.,.,E-t* I nn,. Printed n W.-Germany l ll /78/AY/L


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Typical subiectsforselective measurement:

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Automaticdata storage:

The automatic torage acility s extremely seful whenthe selectedly measured picture area s off-centre, ndthe measured aluehas o be stored untilthedesired ic-ture area has been chosen or the correct moment of ex-posure has arrived.When he slack of the release uttonis taken he measuring ystem willstore he displayedvalue nd hold t for up o 30 seconds, .e.until he buttonis u lydepressed. h s automatic torage svery imple ooperate. t is the special efinement f the LEICAR 3, ex-tends he scope or creative ictorial omposition eci-sively and offers possibilities nthinkable before hetechnological asis or hem was established. ubstitutemeasurements an, or nstance, e quicklymade of anydesired subject area epresentative f the exposure be-fore he inal determination f the picture rea.Exceptionally, hen data storage f 30 seconds s nsuffi-cient, he exposure ime can be set manually.

Sequence of pictures, op to bottom:

Faulty xposures ith ntegrating easurement

Exposure ime correctly etermined y selected-area easurement,but he picture rea ouldbe mproved pon

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Optimum composition made possible by automatic data storage


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Integratingmeasurement

Experience as shown hat n certainlymore han 90% ofallcases ntegratingmeasurement s correct and reliable.Because EITZargefield ntegratingmeasurement tferspractical entreweighting hrough highly ophisticatedinteraction etween 3 photo cells. Very soon t gives he

LEICA 3 userthe onfidence hat he willexpose is pic-tures orrectly, ithoutproblems, n allnormal ituations.Wrth this automatic setting, the LEIGA R 3 can be en-trusted without qualms to any member of the family. Forall subjects hat do not include high lighting ontrasts,almost nvariably n incident ight and when no heawshadows are present when bright and dark areas areevenly distributed, nd no strong colour contrasts arepresent. s wellas under an overcast ky, n diffuse ight,and generally n allphotographic ituations hat eave otime or selecting n area or spot measurement.

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Plus-minus orrectionOrdinary ubjects such as those shown n the top row have a uni-form distributionof dark and bright object details. They therefore

correspond o a mean grey value of 180/oeflection. ut f he subjectshave predominately right or dark areas as in the bottom row, and,exceptionally, elected-area measurement s not possible, hemeasuring alues can be corrected on the rotary ing of the DIN/ASAsetting isc.Thissimple and adjustment or special ases n conjunction ithintegrating measurement orrects underexposures aused by toomuch brightness, or nstance n he beach and n snow, nd overex-

posures aused by dark portions or at night.The pictures f he cable car and of he wallof he ship were exposed + 1 longer and - 1 shorter han recommended y the exposuremeter. Strong ontre our ightmay equire djustment f* 2,verydark subjects f - 2).


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Typicalsubiects orintegratingmeasurement: I

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leica r3 exposure booklet

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