Correcting output of getters => they should be double and not float.
Don't force anymore the temperature rise on destruction (since "init" is just a destruction/consrtuction cycle).
Trying to get the callback totally suppressed.
Correcting a bug in the not re-heating camera upon deletion (hence init).
Way around the "disappearing" of critical feature (here SpuriousNoiseFilter).

Previously this was preventing the object creation (since we wanted to inforce its value to False, but problem if not settable anymore).