In my Sony A55 was some dust after a few years without cleaning now but to see (blue sky photographed with small aperture). The sensor wall I easily can both clean the mirrors perfectly transparent and the sensor, respectively the low-pass filter in front of it is yes. In combination with the recommended Pec pad wipes and the Eclipse liquid that has worked very well. Did the process several times repeat and two towels used but this is now the view again perfectly clear. By the way this combination is one of the best ways to clean the sensor.
