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EXPOSURE
Exposure means finding the right combination 01 lens-opening laperturel and shutter speed
in relation to the sensitivity IASAI 01 your film. IASA
indicates
American Standard Associa-
tianl.
For example,
il you
are
using
a "1m 01 ASA 2000
ITRI-X
typel sensitivity your correct
exposure will be according to the lollowing table:
DA
YLiGHT
EXPOSURE
TABLE
You shutter speed will be 1/100 with the aperture number shown below.
I
Cloudy-Dull or
Bright Sun
Hazy Sun
Cloudy-Bright
Open Shadel41
Light
Subiects
III
f/32
1/22
1/
16
1/11
Average Subiects
121
1/22
f/16
f/ll
f/8
Dark Subjects
131
1/16
1/l1
1/5
1/5.6
III
Light Subiects:
Dista n t
10 ndsca
pes, near-by people with
sea,
beach and
snow
scenes in t he background.
121
Average Subjects:
Near-by people, houses, gardens,
buildings
and
place's
not
in t he shade.
Advisable to
use
this class when light and dark objects are
in about equal
proportions.
131
Dark Subiects:
People
in
dark clothing;
trees,
fiowers,
animals
and
large
buildings.
141
Open
Shade:
Subjects shaded Irom the sun but
lighted
by a
wide area 01
open sky.
The
less
the
open sky the larger
the
lens opening.
If you are
using
an ASA 100 film,
you will
make
a larger lens-opening Or lower your
shutter speed to
1/60.
But if you never want
to
make a mistake,
us~
an exposure meter
.
Be sure to consult your
local camera dealer.
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