Olympus E-3 User Manual page 21

Just below the LCD display, to the right of the main input wheel,
you will find two buttons. The dome-shaped one at the extreme
right marked with three squares in a bracket
change the focus area (from among the 11 available) to suit your
particular requirements.
Press the button and look through the viewfinder while turning
any of the input dials to change the position of the active zone.
The zone you have selected will glow red. (On the LCD display a
bar will appear to show you which zone is selected and on the
display screen at the rear of the camera a graphic similar to the
viewfinder will appear with the chosen selected area shown in
yellow).
To the left of the domed AF area selector button you will find a
round, flat button marked Fn. This is the custom function button
and you can allocate any one of a number of control settings to
this button via the custom settings menu (
BUTTON DIAL – Fn FUNCTION
When you have set a function to be activated by this button, you
need only to press the Fn button with your thumb to instantly
access the pre-set feature.
If you move your thumb to the left of the Fn button, you will find
a slightly larger round button set into a scalloped recess above
the main input dial. This is the AEL/AFL (Auto Exposure
Lock/Auto Focus start/lock) button.
The main aim of this button is to allow you to lock either the
exposure setting determined by the camera for an off-centre
subject – and you can programme the button to do so only while
you depress it or until you press it again (a memory effect) or
you can set the button to start auto focus operation when
depressed and allocate the AEL operation to the shutter button
instead.
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Tools menu 1, B –
).(UMPg99)
allows you to