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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.

PhaseOne IQ Series User Manual

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