User Manual

Using the VS-570OP as a Wireless Master

The VS-570OP offers optical wireless TTL and manual master ash modes.

This enables you to set and control all functions of your wireless slave ash units from the VS-570OP. Three

ash groups (A, B, and C) are available, with independent control over all three groups. For example, you can

set one group to TTL mode and another to manual mode.

In wireless TTL master mode, the VS-570OP lets you remotely control your slave ashes while maintaining

automatic TTL functionality. You can adjust EV for the master and slave ashes from -3 to +3 stops, in

increments of one-third.

Wireless manual master mode allows you to remotely set independent power output for each of your slave

ash groups. Power output is indicated onscreen as a fraction. The 1/1 setting is the full-power ash, and each

successive setting halves the light output, all the way down to 1/128.

To set the VS-570OP as a wireless master, follow these steps:

1. Wireless master mode is set in your camera’s menu. To activate wireless master mode, enable RC mode

in your camera’s menu. When RC mode is enabled, the VS-570OP will display the master summary

screen. For more information on this, refer to Master Summary Screen on page 32.