Gossen MetraWatt lunasix - Colour Temperature Measurement

As
o result
of this
colibrotion,
such
o medium
grey
tone
will
be reproduced
by
block-ond.
white
os
well os color
film
with
o density
or color
volue,
respectively,
thot
lies
opproxi-
motely
in
the
middle
of the stroight
line
of
grodotion.
Thus,
sufficient
lotitude
exists in
correct
exposure
for
those
ports
of o
scene
which
ore
lighter
or
dorker
thon
the
,,medium
greY".
Reciprocity
Efrect
Photogrophy
under
poor
light
condiiions
colls for
"obnormolly"
long
exposure
times
(tripod
!).
This
results
in the
so-colled
reciprociiy
efiecl
with oll
film
types:
the
times
meosured
must
be
extended
for shots
to
ovoid
under-exposure (however,
see
poge
34). This
effect
is
difie-
rent
with the
vorious
film
fypes.
This
is the
reoson
why it
is not
token
into
occount
on
the
scole
of the LUNASIX.
This
effect
couses
olso
o
shift in
the
colour
bolonce
due
to the
longer
times
(colour
cost).
This
shift
con
be
bolonced
with
the respective
correction
filters.
The following
exomples
ore
bosed
on doto
which
we received
from
film
monufocturers.
These
ore
overoge
volues
i.e.
some
emulsions
moy
differ
from
others
which
con
be found
eosilywith
test
exposures.
ln
cose
of doubts
conioct
the respective
film
monufocturer.
Kodok:
The
Ektochrome
Sheet
Films
os
well
os Ektocolor
Film
Types
L
ore
supplied
with
speciol
doto
sheets
with instructions
for
long-time
exposures.
Ofher films
see opposite poge.
42
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