Canon MACRO TWIN LITE MT-26EX-RT Basic Operation Manual page 56

l Setting the Flash RatioN
Single-side Firing
Fire A only Fire B only
The flash ratio of 8:1 to 1:1 to 1:8 is equivalent to 3:1 to 1:1 to 1:3 (1/2-
stop increments) when converted to the number of stops.
The details of the flash ratio settings are as follows.
When <l>, <4>, or <5> is not displayed, flash
heads A and B will fire at the same flash output.
When the flash mode is set to <a>, see pages 24 - 26.
20
Set to <4> or <5>.
Press the <,> button.
Turn <9>, select <a> or <b>,
then press <8>.