Canon CN20 X 50 IAS H Bedieningshandleiding - Pagina 24
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5 OPERATION
5-3-2. Manual Iris Operation
Instant Auto-Iris Switch
The adjustment and the setting can also be made on the information display. Refer to
Manual "Information displa
5-4. EXTENDER OPERATION
The lens is equipped with a built-in 1.5x extender. The focal length of the lens can be extended to 1.5 times by
operating the extender. Note, however, that using the extender lowers the T number by an amount equivalent to
the change in focal length, depending on the iris compensation setting.
Extender
Switching
Lever
Close
Open
Iris Ring
y" .
Slide the iris operation mode change-over switch to the "M"
position. The iris operation is performed by turning the iris ring on
the lens body.
NOTE
The iris operation mode change-over switch must be set to
the "M" position before performing manual iris operations.
The lens may be damaged if manual iris operations are
forcibly performed with the knob at the "A" position.
When the instant auto-iris switch is pressed during manual iris
operation, the iris changes to automatic operation mode while the
switch is held down.
NOTE
The automatic iris operation may not be performed
depending on the types of cameras.
The extender is operated by moving the extender switching
lever at the rear of the lens. When the extender switching lever
is on the 1.5x index side, the state of the lens is equivalent to
having a 1.5x extender mounted.
Note that moving the extender switching lever to the 1x index
side removes the 1.5x extender and returns to lens to the
master lens state.
E16
Operation