Gossen MetraWatt lunasix - The Color-Finder

T
I
l
l
il
equipped with
o sphericol
diffusing
screen
ond
thus
ochieves
superior
collection
of
the
pfroiogrophicolly
efiective
illuminotion:
Photogrophic
subiects
ore usuolly
ihree-dimensionol
ond
tl"rey ore
illuminoted
from
mony
different
directions
(sun,
sky,
reflections
from buildings,
trees,
ground,
etc.).
However,
the
footcondle
toble
con be
of
procticol
volue
for
meosuring
direct
light beoms
(orc
lights,
spots).
For
reflected light
meosuremenf,
footcondle
volues
connot
be
given
of
oll,
since
this method
meosures
the
light reflected
by
the
subiect.
Reflected
light
meosurement
does
not
reveol
the omount
of
illuminotion
-
unlike
incident
Iight
meosurement
-
but
the
brightness
of
o
surfoce, expressed
os
Apostilb,
in short
osb or
condles
per
squore
foot.
The
colibrotion
of
the
LUNASIX
for
reflected
light
meosurement,
expressed
in osb,
is opprox'
7.5
times
smoller
thon
the
Lux
volues
for
incident
light
meosurement.
Scole volue
Lux
(lncident
Light)
osb
(Reflected
Light)
cd/squore
foot
ft-c
F.
I
2.
3
4'
0.175
0.35
0.7
1.4
0.014
.028
.055
"01
0.023
0.045
0.09
0.18
-
0.00075
.0015
.003
.006
l
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