Minolta dimage7 - Manual (Page 9)

9
FLASH METERING
Manual flash control with the built-in flash is added to flash metering. With manual flash control, the
flash output can be set in three levels: full power, 1/4 power, and 1/16 power.
Manual flash is selected with the power level in the basic section of the record-
ing-mode menu (p. 80 of the DiMAGE 7 manual). Manual flash control is indi-
cated on the monitors by M and the power level. Because no pre-flash is used,
manual flash control can be used to fire slave flash units.
The chart lists approximate guide numbers for manual flash calculations. The
following equations are useful in determining the guide number, aperture (ƒn),
or flash-to-subject distance required for exposure.
Guide no. (for distance in meters / feet)
Manual
flash
Full
1/4
1/16
100 200 400 800
Camera sensitivity (ISO)
8 / 26
4 / 13
2 / 6.6
11 / 36
5.6 / 18 8 / 26
5.6 / 18 4 / 13
16 / 52
11 / 36
22 / 72
Guide no. = ƒn. X distance
Guide no.
ƒn.
= distance
Guide no.
distance
= ƒn.
2.8 / 9.2
FLASH COMPENSATION
Flash compensation is set with the Digital Effects Controller instead of the
recording-mode menu.
Set the digital-effects switch to the exposure-compensation position.
1
2
Press and hold the digital-effects button
(1) in the center of the switch and adjust
the flash compensation by using the
up/down key of the controller (2).
Release the digital-effects button (1) to
set the adjustment.