Flash Photography; Changing Lenses - Hasselblad 500C/M Instruction Manual

FLASH PHOTOGRAPHY (Fig. 16)
The 500C/M, SOOEL/M, and SWC/M can be
used for synchronized electronic and expend-
able flash at all shutter speeds from 1 to 1/500
s. Flash synchronization is made via the built-
in leaf shutter's PC flash terminal (32). This
terminal has a friction lock to keep the synch
cord's PC contact more securely in place.
X synchronization
The shutter is fully synchronized for electron-
ic flash (X) at all speeds (1 to 1/500 s). X
synchronization triggers the shutter without
delay to accomodate the brief duration of the
light output from electronic flash units. Ex-
pendable flash is also possible with shutter
speeds of 1/30 s or slower.
Infrared photography (Figs. 17—18)
Infrared (IR) rays (wavelengths longer than
800 nanometers) are refracted to a focal plane
somewhat behind the focal plane of the visi-
ble light images formed on the focusing
screen. To compensate for this discrepancy,
proceed as follows:
Focus as usual on the focusing screen. Then
rotate the focusing ring (4) until the distance
set is opposite the red IR index (29).
Example: In Fig. 17 the lens is set at infinity
for normal photography.
In Fig. 18 the setting distance has been adjus-
ted for IR photography by setting the infinity
symbol opposite the IR index (29). Infrared
(IR) is the designation for wavelengths longer
than 800 nm.
CHANGING LENSES (Figs. 19—20)
Lens removal
Make sure the camera is cocked (white signal
in the film advance indicator window 20) and
10
Fig 16
Figs 17—18