guys, about sensor cleaning...could that be done with a ...air-spray? i know i've seen some spray-cans with air at a store here. i'm talking about this
http://www.shopit.ro/images/products/full/14958/279.jpg
Would this be good at blowing dust off the sensor? or is it too powerful? Because, heck. it's cheaper and, being powerful, if it doesn't harm the sensor or anything, it would be a lot better than a blower.