Filter
Top Products
Using Built-In Speedlight-continued
,
• Flash
shooting
distance
range
Flash shooting distance for the built-in Speedlight changes according to the
film speed
in
use and aperture setting.
ISO
film
speed
25 50 100 200 400
800
Flash
s
hooting
distance
range
Guide
number
m/ft.
6/20 8.5/28 12/39 17/56 24/79 34/112
- -
1.4 2 2.8
4
2-8
.5m/6.6-27.9
ft
.
-
1.4 2 2.8 4 5.6 1.4-6m/4.6-19.7
ft
.
1.4 2 2.8 4 5.6
8
1-4.2m/3.3-13.8
ft.
Aperture
value
2 2.8 4 5.6
8
11
0.7-3m/2.3-9.8
ft
.
2.8 4 5.6 8
11
16 0.6-2.1 m/2.
0-6
.9
ft
.
4 5.6 8
11
16 22
0.
6-1
.5m/2.
0-4
.9
ft
.
5.6
8
11
16 22 32
0.
6-1
.1 m/2.0-3.6
ft
.
8
11
16 22 32
- 0.6-0.8m/2.0-2.6
ft
.
•
The
ma
ximum
fl
as
h shooti
ng
distance can
al
so be calculated by dividi
ng
the guide
number by the
se
lected aperture va
lu
e.
Example:
When
f/2.8 is s
ele
cted with
ISO
100
film using the camera's built-
in
Speed light, the
ma
ximum flash shooting distance will
be:
12
/2.8 = approx. 4.
2m
or
39
/2.8 = appro
x.
1
3.
8
ft
.
98