I've ordered about 5 weeks before the cleaning in order to free the sensor at any time from dirt can. The cleaning itself is without any problems, as described above pull the camera settings in the Reinungsmodus, a drop in the Swab and then gleichmäßg about it. In the first experiment, the sensor was in any case directly clean, but I had a little problem with the moisture Swabs. In my case, they have the liquid so strongly absorbed, the more easily a film formed on the sensor surface, this also vanished not, so I decided to re-cleaning with another dry swab nachzuwischen. Then everything was great.