Using The Fn (Function) - Sony DSC-HX90V Manual

[20] How to Use
Using the Fn (Function) button
You can register frequently used functions to the Fn (function) button and recall them while
shooting. Up to 12 frequently used functions can be registered to the Fn (Function) button.
1. Press the DISP button, and then press the Fn (Function) button in a screen mode other
than [For viewfinder].
2. Select a function to be registered by pressing the up/down/left/right side of the control
wheel.
3. Set the desired setting by turning the control wheel.
Some functions can be fine-tuned using the control ring.
Confirming the operation method Confirming the operation method