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Chapter 6 Maintenance
6
6-5
Testing the iris and zoom functions
1 Set the zoom to automatic zoom mode and check that the power
zoom operates correctly.
2 Set the zoom to manual zoom mode and check the zoom functions
manually.
3 Set the iris switch on the lens to AUTO and point the camera at
objects of different brightness. Check that the automatic iris
adjustment operates correctly.
4 Set the iris switch on the lens to MANUAL and check that turning
the iris ring manually adjusts the iris correctly.
5 Set the iris switch on the lens back to AUTO and check the
following points when the GAIN selector is moved from L to M to
H.
• For objects of the same brightness, the iris is adjusted to
correspond to the change in setting.
• The gain indicator on the viewfinder screen changes to correspond
to the change in setting.
6 If an extender mechanism is incorporated in your lens, put the
extender lever of the lens into the 2x position and check the
following points.
• EX display appears at the left top on the viewfinder.
• The auto iris functions correctly.