Casio Exilim EX-FH100 User Manual page 40

This image size can be selected only in the High Speed CS mode or
when using some BEST SHOT scenes*. Switching to another mode
9M from the High Speed CS mode or selecting some BEST SHOT scenes*
while "9M" is selected will cause the image size setting to change to
"10M" automatically.
* Applicable BEST SHOT scenes: "Move In CS", "Move Out CS", "High Speed
Anti Shake", "High Speed Night Scene", "High Speed Night Scene and Portrait",
"Multi-motion Image", "High Speed Best Selection", "Lag Correction", "High
Speed Lighting", "Expression CS", "Baby CS", "Child CS", "Pet CS", "Sports CS"
40
Snapshot Tutorial