0.3
32
22
16
11
8
5.6
4.0
2.8
2.0
1.4
25 50 100 200 400 1000
(F No.)
ISO
0.4 0.5
0.7
1
2
3
4
5
6
7 8 9 10
14
20
30
40
50
85
mm
24
mm
17
mm
35
mm
(m)
85
mm
35
mm
24
mm
17
mm
E43
1. Find the selected lens aperture on the vertical line for the
appropriate film speed (ISO).
FLASH RANGE
2. Imagine a horizontal line drawn across the graph from
this point.
3. The minimum and maximum subject distances are indi-
cated by the points where this line intersects the lower
and upper set of diagonal lines, respectively.
•
For example, the bold line drawn on the graph shows how
to determine the flash range using ISO 100 film, a 35mm
focal length setting at f/4; in this case the flash range would
be 0.3-7 m ( 0.9 - 23ft ).
•
If the subject is closer than 1m, use an off-camera flash with
cable.
E42
FLASH RANGE
Flash range is the appropriate range that
provides you for a correct exposure. To
determine the flash range for the film and
aperture being used, refer to the graph
shown.
aperture
minimum distance
subject distance
maximum distance
3600HSD_E.qxd for final 00.10.3 12:01 Page E42
