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Minolta DiMAGE 7Hi - Flash Control; Magnification Button and Electronic Magnification

Minolta DiMAGE 7Hi
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8 / 26 11 / 36 16 / 52 22 / 72
94
95R
ECORDING MODE MENU
FLASH CONTROL
ADI, pre-flash TTL, and manual flash controls are available. Flash control is changed in
the basic section of the recording-mode menu (p. 80).
ADI flash metering - Advanced Distance Integration. This mode combines distance
information from the autofocusing system with information from a pre-flash exposure.
Unlike conventional TTL flash metering, ADI is not influenced by the reflectance of the
subject or background ensuring optimum flash exposures.
Pre-flash TTL - calculates flash exposure with a pre-flash only. This mode must be
used when using close-up filters or filters that reduce the amount of light entering the
camera such as neutral density filters. Pre-flash TTL must be used when a diffuser is
attached to the built-in flash or an external flash unit.
The camera will automatically switch from ADI metering to pre-flash TTL when a low-
contrast subject is preventing the autofocus system from focusing. If the autofocus
system cannot lock on the subject, press the AF/MF button and manually focus; the
ADI metering will remain in effect.
Manual flash control - fires the flash at full power, 1/4 power, or 1/16 power. Because
no pre-flash is used, it can be used to fire slave flash units.
The magnification button can be used to activate the digital zoom (p. 46) or enlarge the
center of the image by 4X to aid manual focusing. The function of the magnification
button is selected in the advanced 1 section of the recording-mode menu (p. 80).
When electronic magnification is selected on the menu, the digital zoom is canceled.
Electronic magnification can only be used during manual focus. The magnified display
cannot be used to set the exposure.
Press the magnification button on the back of the camera.
The magnifier icon is displayed on the monitors when
electronic magnification is in effect.
Pressing the magnification button a second time cancels the
function. When the shutter-release button is pressed partway
down, the magnified display is canceled showing the entire
image area.
MAGNIFICATION BUTTON AND ELECTRONIC MAGNIFICATION
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 (1/1)
1/4
1/16
100 200 400 800
Camera sensitivity (ISO)
4 / 13
2 / 6.6
5.6 / 18 8 / 26
5.6 / 184 / 13
11 / 36
Guide no. = ƒn. X distance
Guide no.
ƒn.
= distance
Guide no.
distance
= ƒn.
2.8 / 9.2
Flash power
Set the manual flash control on the menu and
return to the recording mode. Set the digital
effects switch to the exposure-compensation
position (1).
Press and hold the digital-effects button (2) and
adjust the flash power by using the up/down key
of the controller (3).
Release the digital-effects button (2) to set the
adjustment.
2
1
3

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