6 THE HASSELBLAD MANUAL
Lens Shutters
The other type of shutter is in the lens, sometimes called a central shutter, giving the C desig-
nation to such lenses in the Hasselblad V system (HC for H lenses). Shutter blades open and
close at the set speed, exposing the entire fi lm area at the same time (Figure 1-3). Flash pic-
tures can be made at all shutter speeds.
Figure 1-3 With a lens shutter, the entire image area is exposed from the moment the shutter
opens until it closes.
Since the shutter blades open from the center and close again toward the center, expo-
sures can vary slightly depending on the lens aperture but the variations are within accept-
able limits even for critical photography. The H cameras can be programmed for “true
exposures,” which takes into account the set aperture.
Lens shutters, with the shutter blades moving around the optical center, provide the
smoothest and quietest shutter operation with the minimum of camera motion or vibrations.
The maximum shutter speed, however, is limited to
1
/
800
second on the H camera lenses and
1
/
500
second on the other shutter lenses. It is recommended to have shutter lenses cleaned
and lubricated at regular intervals depending on frequency of use.
Manual or Motor-Driven Camera Operation
On the Hasselblad H and XPan camera, and all EL models, the fi lm is advanced automatically
via a built-in battery-operated electric motor. On all the other models in the Hasselblad V
line, the fi lm is advanced, and the shutter is cocked manually by a single turn of a knob
or crank. On the 503CW, the 503CXi, the 200 models, and on some of the 2000 cameras, a
motor winder can be attached, thus giving you the option of advancing the fi lm manually or
automatically.
The Advantages of a Motor-Driven Camera
Motor drives were originally built into fi lm cameras mainly for advancing the fi lm automati-
cally to the next frame. The motor drives, however, also make the camera, lenses, and shutters
ready for the next image and therefore offer benefi ts and operating convenience in digital
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