1.16 F
LASH
A
DJUSTMENT
P
URPOSE
:
To adjust the level of the flash sensors for correct flash control.
T
OOLS
:
EF 50 mm f/1.8 tool lens
Speedlite (already adjusted)
Tripod
Standard reflective chart (Though 18% reflection is preferable, any wall with less
reflection is acceptable.)
S
TANDARD
:
Average ±1 EV
P
REPARATIONS
:
1) Attach the camera on the tripod, and then attach the EF 50 mm f/1.8 tool lens and
the Speedlight.
2) Set up the camera at distance 2 m from the standard reflective board (or white wall
with less reflection). Manually set the lens to 2.0 m, and TV=1/125, AV=F5.6 in the
manual mode.
Fig. 4-13 Setup for Flash adjustment
Part 4: Electrical Adjustment
4-29
2.0m
Standard reflective board
• Use the standard reflective board (or white wall with less spectral
reflection) in a dark place (EV3 max. or a darkroom) to obtain the average
for several cameras. Make adjustments using these average values.
• Carry out this adjustment if the main flex or flash sensor has been
replaced.
• Before this adjustment, be sure to finish the shutter adjustment and flash
sensor temperature compensation.
• Use the TTL Speedlite (540EZ, 300EZ, etc.) for adjusting TTL, and E-TTL
Speedlite (550EX, 380EX) for adjusting E-TTL.
• If the adjustment value is changed, the shutter may no longer fully close.
So, when the adjustment value has been changed, the flash must be
turned OFF then ON again.
CAUTION
Содержание EOS EOS 7
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Страница 148: ...Part 4 Electrical Adjustment...
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