Rollei Mark II Manual De Instrucciones página 39

Operation
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3 . Set the wireless control of your Rollei flash to TTL-ALL .
4 . Set the same channel and group to your flash and to your transmitter
(part 2 and 5 in the function description) .
Note: The flash lights that are using the same channel can be adjusted
separately in different groups regarding their mode and power output .
5 . Press the test button to make sure that the flash lights will sync with the
transmitter .
6 . Press the group button to set the different modes (M/TTL) .
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