This feature was added in v1.2.0. If your version of DeepWater Desktop does not have an integrated image controls section, please update your software.
Image Controls In DeepWater Desktop
Strobe width is the same as the strobe brightness parameter mentioned in other parts of the docs.

Please read the aquaLUX MAX Operations Guide for important safety information before adjusting the strobe width parameter.
Bitrate

Set image quality to 'Highest'