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 Hold down the instant automatic iris button on the lens and point the camera at objects of different brightness.
Check that the iris ring turns as the instant automatic adjustment is made.
6 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.
7 If an extender mechanism is incorporated in your lens, put it into the operative position and check the effect.
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Chapter 6 Maintenance |