Sekonic LITEMASTER PRO L-478 Series - 4-2. Setting Light Receiving System

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4-2. Setting Light Receiving System
4-2-1. Measuring with Incident Light Function (Lumisphere Extended /Retracted)
Useeitherextendedorretracted(at)lumisphere
tomeasureincidentlight.Pointthelumisphereat
thecamera(lensopticalaxis)fromapositionclose
tothesubjectandthenmeasure.
1. ExtendingLumisphere
 RotatetheLumisphereretractingring
2
to
alignthemarkwiththeextendedsymbol( )
onthemeterhead.
2. RetractingLumisphere
 RotatetheLumisphereretractingring
2
to
alignthemarkwithretractedsymbol( )on
themeterhead.
Lumispherealighiningmark
Lumisphere
retracting ring
2
Lumisphere
retracting ring
2
Extended( ) Retracted ( )
LumisphereExtended LumisphereRetracted(at)
Extendedlumisphereisusedtomeasure
illuminationofpeople,buildings,and
otherthreedimensionalsubjects.
Retractedlumisphereisusedtomeasure
illuminationofatsubjectssuchas
manuscripts,paintings,differenceofoneor
morelightsourcesforratiolighting(SeeP46
fordetails)andilluminationinLuxorFoot-
candle (See P28 for details).
•
Try to minimize the inuence fo the person taking the light measurements. (Do not obstruct the light sources. There
will also be reected light from the person’s clothing, so do not allow this reected light to enter the light receptor.)
•
If the light meter is used with the Lumisphere retracting ring in a middle position, distributed light quality will change,
and suitable measurements cannot be made.
•
Do not push down the lumisphere with your hand.
•
Because it may affect the precision of the measurements, be careful not to damage or dirty the Lumisphere/Light
receptor. When Lumisphere becomes dirty, wipe it with a dry, soft cloth. Never use organic solvent such as thinner or
benzene.