Hasselblad 500C/M Instruction Manual page 9

built-in leaf shutter or with that shutter dis-
connected (exposure is made with the
camera's focal plane shutter).
The CF lenses feature built-in Prontor CF
leaf shutters with an automatic diaphragm,
exposure value scale and X synchronization.
These lenses attach to the camera via a
bayonet mount.
Diaphragm (Fig. 11)
CF lenses have an automatic diaphragm that
stops down to the working aperture immedi-
ately prior to exposure.
Depth-of-field preview:
Press down on the top part of the depth-of-
field preview tab (36). Use your left thumb.
The lens will then stop down to the preset
working aperture.
Upward pressure on the tab will reopen the
diaphragm to the maximum aperture.
(After film advance, the diaphragm is al-
ways reopened to the maximum aperture un-
less the tab is depressed.)
Shutter speeds (Fig. 12)
Shutter speeds are set on the shutter speed
ring (35) opposite the index (5). The shutter
speed ring has two scales, an F setting and a
green detent button. The white scale shows
the shutter speeds and the orange scale the ex-
posure values.
The green F setting is only used when the lens
is attached to a 2000FC or a 2000FC/M cam-
era (the F setting disconnects the optic's built-
in leaf shutter. See the Instruction Manual for
the 2000FC/M.) The F setting can be made
only after depressing the green detent button
(34).