Hasselblad 503CX, Manual

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Pre-release and Cable Release
Considerable efforts have been made to reduce cam-
era vibrations caused by moving parts in the exposure
sequence. However, if you wish to avoid these vibra-
tions completely, you can pre-release the mechanism
by pushing the pre-release button upwards. This
causes the following sequence: the mirror folds up,
the shutter closes and remains closed, and the auxil-
iary shutter opens. When you subsequently press the
release button, only the shutter then operates at the
preset speed.
As shown in the illustration , you can also attach a ca-
ble release to further reduce vibrations.
Since the image on the focusing screen disappears in
a pre-released camera, a sports viewfinder is a good
way to keep track of moving subjects.
Double Exposure
As the camera has been designed to prevent acciden-
tal double exposure you will have to carry out the fol-
lowing procedure in order to make multiple exposures
on the same frame:
1.
Depress the main release button and make the
initial exposure .
2. Insert the magazine slide and remove the mag-
azine.
3. Wind the camera with one full revolution of the
winding crank.
4. Replace the magazine and remove the slide.
The unit is now ready to make a second exposure on
the same frame. You can make additional exposures
in the same manner.