Hi guys, after reading some post and seeing some pix. i realise that dust on the sensor create black spot. So i tried it on my cam, i took a pix of a plain wall, with aperture set to f16. I do see some black spot too, dat means i have dust on my sensor too rite? So i bought a blower and tried cleaning it. And it seems to help abit but there are still some black spot in the image. Is it possible that these dust can be cleaned away 100%? Pls advice as i am very new to photography. Worried