You may have to struggle a little bit with the Hungarian translation, but photography site Pixinfo has a timely and admirably thorough review of the sensor-cleaning systems employed by several SLR digicams.
As we saw at PMA, dust removal is quickly become a major photography fetish, and camera makers have experimented with various ways to keep image sensors clean without owners having to resort to swabs and sprays.
The in-camera systems all rely on some version of the old dirty rug strategy, carefully shaking the sensor to knock dust particles loose. Pixinfo's verdict is that the version used in the somewhat ancient Olympus E-300 is the only one that does much good, with Sony, Canon and Pentax systems providing little or no dust removal.
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