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Flash/strobe synchronization 11
The C series lenses have built-in leaf shutters with speeds from 1s to 1/500s and B. Flash
synchronization occurs at full shutter opening via the PC flash/strobe terminal. Suitable
electronic flash/strobe units can be used at all shutter speeds from 1s to 1/500s as well as
B. Please see under ‘Flash’ the sections on the use of a Hasselblad Flash adapter SCA 390.
Pre-release and cable release 10
Considerable efforts have been made to reduce camera vibrations caused by moving parts
in the exposure sequence. However, if you wish to avoid these vibrations completely, you
can pre-release the mechanism by pushing the pre-release button upwards. This causes
the following sequence:
1. The mirror folds up
2. The shutter closes and remains closed
3. The diaphragm closes to its preset aperture
4. The auxiliary 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 cable release to further
reduce vibrations.
Depth of field preview 9
Depth-of-field can be visually checked on the focusing screen. The diaphragm can be
stopped down to the preset aperture from its normally wide open position simply by push-
ing the depth-of-field preview lever downwards until it locks. To reopen the diaphragm,
depress the lower part of the lever.
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