Minolta SR-1 - Shutter Speeds for Flash Photography; How to Determine Exposure

Insert
the
flash
gun
into
the
acce-
ssory shoe
f rom the
rear.
Then
tighten the
f
lash
gun
screw.
Shutter
speeds
for flclsh
photogrqphy
(The
speed
shown
by oblique
lines
are the speeds
you
can
use.)
How
to determine
exposure
The
important
factor
in f lash
photography
is
the
aperture setting.
This is
determined
by
the
brightness of the
f
lash and
the
distance
from
the
tight
to
the
subject.
As
these
factors very
greatly,
precise
instructions are
attached
with
flash bulbs and electronic
flash.
Exposure
guide
nurnbers
The instructions accompanying
f lashbulbs or
electronic
f lash will
include
guide
numbers
for
the most
popular
films. lJnder
the
guide
number system, you
divide
the
guide
number by the distance
of
the
subject
from
the lamp
in
order
to obtain
the correct
f/stop.
The
guide
number
formula
is:
? ,
Guide
number
t/stoP
--
distance
W
%^
Xrt
)60B
lscc.
%
% % ,n
),4
X
,6
i!
FP
cl
bul
b
I
d
rl
X
F. class
bul
bs
a
M class
bul bs
Speed
ligh
z
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