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I. CAMERA FEATURES AND OPERATION 19
Action Combo
the m
ain subject is the closest and most prominent object in the frame and, in
One-
Shot, this is where AFPS works best.
The Bonu
s Feature is that the QCD is now part of your focusing system rather than your
e
xposure control. The exposure controls are relocated to the AF Point Selection Button.
Ho
ld the selection button in and turn the Main Dial on top of the camera to adjust
e
xposure compensation in AE modes, or f/stops in Manual mode. The disadvantage of
having these exposure features on the QCD was that it made it very easy to change
exposure settings accidentally. Now, it’s just as fast to adjust your exposure settings,
and you are far less likely to change them accidentally.
This combination is most useful for sports and wildlife photographers. Like the Event
Combo, it provides a great deal of versatility and on-the-fly decision-making ability for
photographers, especially for those who shoot rapidly moving subjects in AI Servo AF.
Shooting
Situation
Examples
AF Mode
Focus
Activation
button
C.Fn Set
Function
Sports,
Wildlife,
Birds
Single AF
Point –
Football,
Soccer,
Hockey,
Wildlife
AFPS –
Baseball,
b
ir
d
sin
flight,
wildlife in
the open
AI Servo
Rear Button
AE Lock (*)
focus
activation –
and Assist
Button
4-1 or 4-3
17-1
(optional)
18-2
Moves focus activation from the Shutter
release’s halfway position (SW-1) to the
camera’s rear AE Lock button (*).
C.Fn 4-3 is probably a bit better in rapidly
changing shooting situations like this
because it takes the meter reading in
real-time at the moment of exposure and
can adjust when a subject moves from one
lighting condition to another (e.g., a player
ru
nnin
g fr
om sh
ade into the sun). Each
image in a sequence is metered separately.
C.F
n 4-1 w
i
ll lock the metering for all shots
to the setting used for the first image in the
sequence when using continuous drive. This
i
s
u
seful if you’re shooting a sequence in
even lighting where multiple images may be
printed or shown together.
This expands the AF activation area if
needed in lowered contrast situations.
Activates the Assist Button as a focus
activation button using the photographer
registered HP.