possible to use less exposure then what the fps maximum
allows by setting register 10. register 10 configures the
actual exposure as quotient of the full exposure, with 0
- being no exposure at all (not very usefull) and reg10_max
+ being no exposure at all (not very useful) and reg10_max
being max exposure possible at that framerate.
The code maps our 0 - 510 ms exposure ctrl to these 2