Googling for information on sensor cleaning on the OMD only seems to produce endless threads from a variety of forums, none of which seem to be conclusive on the question as to whether wet cleaning by the owner is safe - especially in relation to the IBIS. Has anyone got reliable answers to these questions: - Is the sensor locked in some way when the camera is turned off? - Has anyone cleaned the sensor and caused damage to the IBIS? If so, was the camera turned on or off at the time? - Has anyone cleaned the sensor regularly with no apparent ill-effects? Likewise, has this been done with the camera on or off? Were there any specific techniques or tools/products used? - Has anyone had their OMD cleaned professionally by a 3rd party other than Olympus? If so, do you know if they used any particular 'trick'? - Has anyone used Olympus to clean the camera outside warranty? If so, was there a charge and how much? Sorry for so many questions - just trying to get to definitive position!