45
H4D
21
ISO / WB
Save
EXP
Tip
Aperture and shutter speed settings can both be changed
even while the busy light on sensor unit is flashing.
Tip
Access to the B and T shutter speed settings can be tempo-
rarily hidden. See Custom Options #34.
F
Programmed variable: Pv - This mode is very similar to Pro-
grammed, except with the additional parameters of lens focal
length being automatically taken into account. For example,
long shutter speeds will automatically be avoided with a long fo-
cal length lens.
To set one of the modes, proceed as follows with the camera in
active mode:
1) Press the EXP button on the viewfinder.
2) Turn the front control wheel (either direction) until you reach
the required setting.
3) Press Save (ISO / WB button) to retain the setting.
In Automatic mode the front control wheel selects alternative
aperture /shutter combinations while maintaining the same EV
and the rear control wheel alters the amount of exposure com-
pensation. The compensation appears as a +/- symbol on the grip
display and viewfinder display (illus. 4).
Variations (chosen by using the front control wheel) from the
specific combination selected by the P or Pv mode are signified
by a double arrow symbol appearing between the aperture and
speed settings (illus. 5) on the grip display. These new variations
provide the correct exposure but in different combinations.
AE-Lbutton 1,2,3,4,5,6
This button has two main functions that can be incorporated
in various working methods involving exposure locking. It also
has an extra function for the flash measure capability (see AE-L
section under Flash). The AE-L button can:
a) lock an EV setting in manual and automatic modes.
b) be used as a Zone System placement button.
a) When the button is pressed (fig 1), the light metering facility is
locked to the EV setting at that moment. An L (= locked) symbol
appears between the shutter speed and the aperture indication
(fig 2) on the grip display and viewfinder display to confirm the
status. Press the AE-L button again to unlock (toggle function).
In the locked setting, the aperture and shutter speed become
interlocked. In this way, a new aperture/shutter combination that
still represents the same EV, can be rapidly chosen. For example,
if you set the shutter at 1/125s and the aperture at f/8 and lock
them together, you can access new EV-equivalent combinations
of, for example, 1/30s a f/16 or 1/500s at f/4 just by moving the
front control wheel.
In practice this means you could, for example, in auto mode, posi-
tion the metering area (spot setting) over an area in the subject
that you determine to be equivalent to a mid-grey and lock it with
the AE-L button. You can then recompose the picture with the
metering zone positioned over an area much brighter or darker
while still retaining the original exposure setting and choose a
new combination of aperture and shutter speed settings.
3
4 5
1 2
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