Manual flash – Olympus EVOLT E-500 User Manual
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Flash shooting
4
V
ario
u
s sh
oot
ing
fu
nct
ions
Flash off $
The flash does not fire.
In this mode, the flash can be used as an AF illuminator when it is raised.
Flash synchronization speed
Shutter speed can be changed when the built-in fla
sh fires.
Manual flash
This allows the built-in flash to output a fixed amount of light. With [MANUAL
FLASH] set to [ON] (
g P. 125), the amount of light can be selected in the
flash mode setting.
To shoot with manual flash, set the f value on the lens based on the distance
to the subject.
Calculate the f value on the lens using the following formula.
Aperture (f value) =
ISO sensitivity
Ratio of amount of light
GN: Guide number
FULL (1/1)
13
1/4
6
1/16
3
1/64
1.5
ISO value
100
200
400
800
1600
Coefficient
1.0
1.4
2.0
2.8
4.0
GN x ISO sensitivity
Distance to the subject (m)