Hasselblad 70480522, 70380554 AE- L button 3, 4, 5, ­section under Flash . The AE-Lbutton can

H4D

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EXP

F

3

ISO / WB

Save

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T i p

Aperture and shutter speed settings can both be changed even while the busy light on sensor unit is flashing.

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T i p

Access to the B and T shutter speed settings can be tempo-

rarily hidden. See Custom Options #34 .

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 focal 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- L button 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-Lbutton 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-Lbutton 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-Lbutton. 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.

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