Instruction manual

consideration during shooting as polaroid filters affect the
light measuring. Regardless of the focal length of the lens
used, in this exposure metering system about 25 % of the
central image area is measured.
Fully automatic exposure control
The ARRIFLEX 16 SR II is also available with fully automatic
exposure control; cameras without this feature can also be
fitted with it at a later date.
Automatic iris diaphragm control is only possible with 16 SR
spring-Ioad diaphragm lenses (which have a rod to adjust
the diaphragm).
The exposure meter is set as previously described.
The change-over to fully automatic exposure control is made
on the lens itself by turning the diaphragm ring to index
position A. When this is effected; the automatic control
circuit is activated when the camera switch is in the
measuring position together with the exposure meter. A
servo motor in the system moves the iris diaphragm until the
optimal setting, controlled through the viewfinder is obtained.
When filming with automatic exposure control, the
diaphragm ring must remain in position A. If the camera is
switched off, the diaphragm automatically opens fully again.
As with manual exposure control for speed, the setting is
held in a memory. This information is held in the memory
until new information is fed to the lens.