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H4X
1
Red warning triangle and green LED flash
symbol to left of viewfinder LCD display.
1
FLASH
3
DRIVE
Save
5
AE-LL
The 'Low Flash' warning can be turned off in Custom Option
#26 if preferred.
2
R
4
F
6
T i p
5) If the settings were incorrect to match the output of the flash
unit, the viewfinder display shows a red triangle alongside a
flashing green 'flash' symbol plus a warning message - 'Low
flash'. The grip display will also show a warning message -
'Low flash'.
Conventional measures should then be taken to correct the
situation. (That is: move closer to the main subject, use a
larger aperture setting or use a higher ISO setting).
Separate flash unit connection and use
Separate flash units can be electrically connected either by way
of the hot shoe accessory holder (see previous warnings) on the
top of the viewfinder or via a cord to the PC connection port on
the left hand side of the camera body. Slave unit switches/ trans
mitters can also be connected similarly dependant on unit (see
specific user manuals for details).
Keep the plastic safety cover in place in the hot shoe when not
in use.
Flash measure of separate flash unit
You can measure the effect of an attached flash unit (with PC
connected flash units and SCA3902 compatible flash units set to
M mode), where the camera acts much as a flash meter would.
The aperture setting can be adjusted and more trial exposures
made until the information on the grip display is satisfactory.
To use flash measure:
1) Press the FLASH button on the grip to access the flash option
screen.
2) Turn the rear control wheel until Flash measure appears.
3) Press Save (DRIVE button) to access the flash exposure
screen.
4) Make preliminary required aperture setting by turning the
front control wheel.
5) Press the AE-L button. The camera will close the aperture,
raise the mirror and fire the flash. Light reflected from the
flash lit subject will be reflected off a white spot on the
auxiliary shutter to the meter sensor.
6) Deviations from a normal exposure are displayed as
differences in EV on the grip display and the viewfinder
display. If 'high' or 'low' appears, change the aperture
accordingly and make a new test reading.
Change the aperture until Diff EV: 0 appears, or the desired
amount of deviation from the normal exposure.
Diff EV: Low signifies more than 2 EV under
Diff EV: High signifies more than 2 EV over
70
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