Photographer Petteri Sulonen has published an extremely detailed guide to cleaning the sensor of a digital SLR camera using cheaper alternatives to commercial sensor cleaning brushes.

“On the other hand, there’s a far greater variety of artist’s brushes in the right material, shape, and size available. Go to any halfway-decent art-supply store, and look for synthetic brushes. You’ll find easily a half-dozen varieties that look approximately right. The trouble is, in all the art stores I visited, the bristles are always sized together for transport. For an artist this doesn’t matter, since the size dissolves when you dip it in water—but for this purpose, it’s extremely important to get all the size out, not just most of it. This is certainly possible, but an unsized brush is clearly preferable to one with size in it.”

Website: The Pixel Sweeper - A cheap alternative to the Sensor Brush