FV Lock

This feature is used to lock flash output, allowing photographs to be recomposed without changing the flash level and ensuring that flash output is appropriate to the subject even when the subject is not positioned in the center of the frame. Flash output is adjusted automatically for any changes in ISO sensitivity and aperture. FV lock is available with CLS compatible flash units only (0 192).

To use FV lock:

1Assign FV lock to the Fn button.

Select FV lock for Custom Setting f3 (Assign Fn button > Press, 0 328).

2Attach a CLS-compatible flash unit.

Mount a CLS-compatible flash unit (0 193) on the camera accessory shoe.

3 Set the flash unit to the appropriate mode.

l

Turn the flash unit on and set the flash mode to TTL, monitor pre-flash AA, or monitor pre-flash A. See the Speedlight instruction manual for details.

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