Fractional equivalents for the power levels 9-1Updated a month ago

Each power level designates 1 stop or 1/2 the output of the level just above it.

Power level 9 is 1/1, 8 is 1/2, 7 is 1/4 and so forth down to level 1 which is 1/256 of the full output. Another example to help understand this is a situation when moving from power level 9 to 8, a one stop light change. If your camera was at f/5.6 at level 9, an equivalent exposure would be f4 at level 8.

Power Levels- FJ systems employ level 1 thru 9 with 9 being the highest.  Each number represents 1 stop (½ or twice the previous numbered output).   

• Power Level 1 (1/256) not available in Canon RT