Olympus E-330 EVOLT E-330 Advanced Manual (English) - Page 48
Manual flash
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Flash shooting Manual flash Various shooting functions This allows the built-in flash to output a fixed amount of light. With [MANUAL FLASH] (g P. 109) set to [ON], 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. 3 Ratio of amount of light FULL(1/1) GN: Guide number 13 1/4 6 1/16 3 1/64 1.5 Calculate the f value on the lens using the following formula. Aperture (f value) = GN x ISO sensitivity Distance to the subject (m) ISO sensitivity ISO value 100 200 400 800 1600 ISO sensitivity 1.0 1.4 2.0 2.8 4.0 48
48
Flash shooting
Various shooting functions
3
Manual flash
This allows the built-in flash to output a fixed amount of light. With
[MANUAL
FLASH]
(
g
P. 109) set to
[ON]
, 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.
ISO sensitivity
Ratio of amount of light
GN: Guide number
FULL(1/1)
13
1/4
6
1/16
3
1/64
1.5
Aperture (f value) =
GN x ISO sensitivity
Distance to the subject (m)
ISO value
100
200
400
800
1600
ISO sensitivity
1.0
1.4
2.0
2.8
4.0