Advanced Functions

Wireless Mode

With the AF540FGZ, you can take photographs with the flash unit separated from the camera wirelessly in P-TTL mode.

Combine the flash unit with the built-in flash unit of the camera or another AF540FGZ attached to the camera.

The AF360FGZ can be used interchangeably withAF540FGZ flash units for wireless mode photography.

Before photographing, confirm the following.

1.Whether your camera supports this function.Cameras that Support Wireless Mode (page 63)

2.Whether you can use this function with the combination of your camera and the flash mode you have set.

Functions Related to Each Flash Mode (page 64 - 71)3.Whether the slave mode is set to SL1.Slave Mode Setting (page 52)

Notes on Wireless Flash Control (P-TTL photography)

When using the AF540FGZ in wireless mode, the following information is transferred between the flash units attached to the camera and separated from the camera, before the flash units are fired.

Shutter release button is fully pressed.

The flash attached to the camera emits a small control flash (relays the flash mode of the camera).

The external AF540FGZ emits a pre-flash (verifies the state of the subject).The flash attached to the camera emits a smallcontrol flash (relays the flash output amount to the external AF540FGZ).The flash attached to the camera will emit a pre-

flash once more after this to relay the flash duration time when HS (high-speed sync) is set.

The external AF540FGZ fires the main flash (where both flash units fire main flashes, refer to page 44).

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