Interchanging The Extended Lumisphere And Retracted Lumisphere - Sekonic SPEEDMASTER L-858D Operating Manual

3) Interchanging the Extended Lumisphere and Retracted
Lumisphere
1. Extending Lumisphere
Extend the Lumisphere to measure the illumination of people, buildings, and other
three dimensional subjects.
Rotate the top of the Lumisphere Retracting Ring
ring with the lumisphere mark (
2. Retracting Lumisphere
Retract the Lumisphere to measure the illumination of flat subjects such as
manuscripts, books, or paintings, measure the illumination ratio (Contrast Function),
and simply measure the illuminance.
Rotate the Lumisphere Retracting Ring
the retracted lumisphere mark (
Lumisphere
2
NOTICE
● Try to minimize your influence on the light measurement. Do not block the light
falling on the subject with your hand or body. Do not allow light toned clothing to
reflect light into the meter.
● Do not set the Lumisphere Retracting Ring
change the quality of the light and produce an incorrect measurement.
● Do not push down the Lumisphere
● Because it may affect the precision of the measurements, be careful not to damage
or contaminate the Lumisphere
with a dry soft cloth. Never use organic solvent such as thinner or benzene.
).
).
Lumisphere Retracting Ring
Lumisphere Aligning Mark
Extended Mark
2
. If the Lumisphere
2
to securely align the mark on the
1
to securely align the mark on the ring with
1
1
Retracted Mark
to an intermediate position. This will
1
with your hand.
becomes dirty, wipe it
2
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4. Basic Operations