Hasselblad XPan II - Manual (Page 25)

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25
Infrared Photography
░ 37 ░
Infrared (IR) rays (wavelengths longer than 800 nm)
form an image on a plane further away from the lens
than the image plane for visible light. To compensate
for this difference you have to align the chosen dis-
tance against the red IR index and not the normal
central index. Proceed as follows:
1. Focus as usual.
2. Note the distance on the focusing scale that is op-
posite the central index line on the lens.
3. Now rotate the focusing ring to set this distance op-
posite the red IR index spot instead of the central
index line.
The illustration shows a lens focused at approx. 4
metres for infrared film. See specific film instruction
leaflet for details of filters, film storage, handling and
development.
Please make tests with your choice of infrared film before
use. High speed black and white infrared film, for example,
can be slightly fogged on the edge of the film frame by the
film transport emitter / sensor system.
Flash
░ 38 ░
There is flash sync at all speeds from B to 1/125 via the
PC flash socket or hot shoe connector. Please see your
flash unit's user manual for further information.
When the panorama format is selected, the flash
should be adjusted to cover the field of view. With the
45mm lens you should choose an angle that would
normally be suitable for a 25 mm lens in the 35 mm
format. With the 90mm lens you should choose an
angle that would normally be suitable for a 50 mm lens
in the 35 mm format.
The flash can be programmed to be triggered either
at the beginning or at the end of the exposure. Press
the MODE button on the camLCD for 1s. Press
repeatedly until a flash symbol appears on the lower left
of the display accompanied by N (triggering at the begin-
ning of the exposure) or R (triggering at the end of the
exposure). Select your choice with the ▲ / ▼ buttons.
Confirm by pushing MODE again or by pressing the
release button halfway. A flash symbol is shown on the
display as well as your choice (N or R).