Hasselblad H4D 40, Руководство пользователя

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H4D
Single Shot
In
Single Shot
setting (
AF S
), the shutter release will be blocked until the camera fi nds
the optimum focus setting. This ensures that no captures can be made that are not fi nely
focused. However, this delay will normally be only a fraction of a second in good lighting
conditions with a clear focusing pattern.
Note though that in this mode the lens will focus at a distance and will remain focused
at that distance while pressure remains on the shutter release button. In this way, you
can focus on a nearby object for example, temporarily positioned within the focusing
zone on the viewing screen and then without releasing pressure on the shutter release
button, recompose knowing that the focus remains on the object chosen even though
it is now outside the focusing zone. Releasing the pressure on the shutter release button
and pressing again half way would now change the focus setting to the distance of the
object within the focusing zone.
See under ‘Manual override in autofocus mode’ for a useful way of working with manual
and autofocus settings in a combined manner.
Continuous
At Continuous setting ( AF C ), the shutter can be released rapidly before the lens is fo-
cused in order to capture a split-second shot (in
Single Shot
, a capture cannot be made
until the camera has had time to focus). However, the camera will continue to focus if a
moving subject is within the focusing zone or if you recompose, even though the shutter
release button is half pressed.
One method to exploit this feature when photographing in a rapidly changing situa-
tion such as photojournalism, for example, is to keep the shutter release button pressed
down. In this way the lens focuses constantly (according to the focusing zone) and by
momentarily releasing the pressure on the shutter release and then immediately press-
ing again, you minimize the amount of time needed for the lens to check focus, thus
ensuring a split-second shot at optimum focus.
True Focus
The True Focus setting ( AF T ) is generally used in specifi c circumstances to automatically
correct for camera angle/focus setting discrepancies. It can also be combined with
AF C
,
AF C
and
M
. See below for full description.
Focus mode
Focus mode is set via the control wheels in the following manner:
In camera active mode:
1) Press the
AF
button on the grip.
2) Turn the front control wheel to:
Single Shot
,
Continuous
,
True Focus
or
Manual
as required.
3) Press
Save
(
ISO/WB
button) to store the setting.
Manual override in autofocus mode
Manual override is always possible in automatic focus mode without any need to make a
new setting; just rotate the focusing ring in the conventional manner. As the lens barrel
does not rotate in autofocus mode, you can hold the focusing ring for instant manual
adjustments as you would with a conventional lens. However, to retain the new manual
focus adjustments, you must maintain the pressure on the shutter release button. You
can instantly return to the automatic focusing mode by releasing the pressure on the
shutter release button fi rst and then pressing the release button halfway again.
The instant manual override facility produces a convenient way of working. You can take
advantage of autofocus while retaining an instantly adjustable manual focus check if
preferred for pin-point accuracy without making any changes in the settings.
AF
2
3
F
ISO / WB
Save
N o t e
For users who prefer manual focus
control but would like the benefi ts
of autofocus, one method is to set
the AE-L button (or anuy user but-
ton) to AF (Single) drive.
The main subject can then be
centered and the AE-L pressed, to
ensure correct focus. The camera
reverts immediately to manual
focus control when the button is
released.
Therefore, you can recompose the
picture without having to maintain
pressure on the release button in
order to retain the newly automati-
cally made focus setting (AF-T can
also be used).