Hi Christian.

If you are using FocusMax Star Selection, see > ACP Preferences > Imaging Tab > bottom of window > FocusMax > Select from choice of "FocusMax MultiStar" FocusMax Acquire Star" or "ACP Star Selection".

I'm not certain but I think if you have selected "FocusMax AcquireStar" in ACP for the autofocus method then the choice of filter during the autofocus run is configured in FocusMax > Preferences > Autofocus tab > Filter, and also see FocusMax > Preferences > AcquireStar tab > bottom of Window "Pointing filter".

Can't think of any other reason why the autofocus run is trying to use the blue filter...

William.