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Reference:
Available
maximum
aperture
for
each
film
spe
ed
ISO
film
speed
25
50
100
200
400
BOO
112.B
113.3
1/4
1/4.B
1/5.6
1/6.7
1000
1/7.1
As
film
speed
increases
by
one
step,
available
maximum
aperture
is
stopped
down
by
112
flstop.
If
you
are
using
a
lens
with
a
maximum
aperture
smaller
than
listed,
of
course,
the
automatically
controlled
aperture
range
is
from
the
lens
maximum
aperture
to
its
minimum
aperture
(i.e.,
its
entire
range).
Note
for
selecting aperture
• Make sure your subject is within Ilash shooting distance
range.
• The larger the aperture (the smaller the f-number) you
select, the farther the maximum shooting distance,
whereas the smaller the aperture (the larger the
1-
number), the smaller the maximum shooting distance .
•
If
subject distance remains the same, the larger aperture
you select, the
le
ss depth of field; however, Speedlight
recycling time is shorter. On the other hand, the sma
ll
er
the aperture, the greater the depth
of
field, but recycling
time
is
longer.
Note
for
selecting shutter speed
With a slower shutter speed, a smaller aperture
is
automatically selected, resulting
in
a shorter shooting
distance range.
117