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Shooting conditions
Background is too bright, and subject is dark
(backlight)
Open the iris slightly.
Operation
Background is dimly lit, and subject is bright Stop down the iris slightly.
When special effects are desired Adjust the iris as required.
Exposure adjustment
The exposure varies according to the lens iris.
The lens iris can be adjusted using the automatic iris or manual iris settings.
O
Automatic iris
Set the lens iris selector switch (IRIS) to “A.”
The iris is automatically adjusted to obtain the brightness which is commensurate with the subject.
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This unit’s automatic iris operation serves to measure the average brightness of the entire screen to control
the iris. This means that the subject will tend to become all white or dark when a spotlight is directed on the
subject or when the subject is shot under backlight conditions. Use the lens iris at the manual setting for
lighting conditions such as these.
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Manual iris
Set the lens iris selector switch (IRIS) to “M.”
Turn the iris ring and adjust the brightness.
Also refer to the operating instructions accompanying the lens you have purchased.
Lens iris selector switch
Iris ring
Note:
$ Use the built-in ND filter if there is too much light.