PhaseOne 645DF+ - Shutter in M;X; AF Priority

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7.1.24 Shutter in M/X
This menu is applicable when a Phase One 645DF+ camera is used
in either M or X exposure modes with a leaf shutter lens. Using the X
(ash synchronization) mode limits the shutter speed range from 1/60th
second to 1/125 second irrespective of the selected (Mixed, Leaf or
Focal Plane) mode. Select Manual (M) mode and select one of the
following options:
Mixed: The leaf shutter range from 1 second to 1/1600th second are
selected. Shutter speeds above and below that range use the focal
plane shutter. Flash synchronization is possible on all leaf shutter
speeds.
Leaf: Shutter speeds are limited to a leaf shutter range from 1 second
to 1/1600th second. Flash synchronization is possible on all shutter
speeds.
Focal Plane: Shutter speeds range from 1 minute up to 1/4000th
second. Flash synchronization is only possible from 1/60th to 1/125
second. (Depending on the ash being used).
N.B. The LCD screen on the Phase One 645DF+ will either display a LS
(Leaf Shutter) or FS (Focal Shutter) icon to correspond to the shutter
speed or custom camera setting.
7.1.25 AF priority
Select one of the following AF (Auto Focus) priority options:
Speed: This mode is ideal when capturing moving subject matter.
Accuracy: This the default setting. It is particularly recommended when
the Phase One 645DF+ is used with a lens with a long focal length.
P
Av
Tv
M
X
CF
C1
C2
C3