Originally posted by Kozlok If the dust is stubborn and won't come off with the dust removal system or rocket blower, I use the Cleanskies sensor brush set, available on evilbay. Basically they are acrylic paint brushes without the sizing material used to make paintbrushes point properly. You use a can of air to blow the brush clean, then take a single swipe across the sensor. The air blowing on the brush creates static electricity so the brush lifts up the dust. Works pretty well.
I use 'em too. They're cheap & work better than anything else I've tried.
Originally posted by jatrax Easiest way to check for dust is to set your aperture to f/22 or so and take an image of the sky. Dust on the sensor is more visible at smaller apertures.
Yep. You can also set the f-stop at f22 & take a pic of any blank white computer screen. (I use notepad for this.) I put the camera in manual focus mode, focus it to infinity & stick it right up to the screen to take the shot. That eliminates any chance of getting a "false positive" for dust. I prefer this method to the sky, because you can do it when it's dark or rainy out, less running in & out of the house, and you don't have to wonder if it's dust or a distant bird you're looking at.