How dirty is YOUR sensor?

How dirty is YOUR sensor?

This is a test shot taken with my 3-and-a-half year old Canon Rebel XT (EOS 350D) to determine exactly how dirty my sensor is. Lately, I’ve had to do a lot of dust removal in Lightroom or Photoshop, especially when nice blue skies have been involved. This shot is of a sky-blue desktop background on my computer monitor at ƒ/22 to bring all those dust bunnies into focus. Bringing the shot into Photoshop, I ran Auto-Levels on a duplicate of the blue layer to maximise the contrast, circled every bit of dust I could see in red, then turned the duplicate layer off (because it looks better this way).

Terrifying, right? Each of those red circles indicates a dust speck sitting on the sensor array. The two big ones seem to be smears on the lens itself. Read what I did about this sorry state of affairs on my blog. Oh, and view it large!

Posted by Cameron Booth on 2009-06-07 21:22:31

Tagged: , Canon Degital Rebel XT , Canon EOS 350D , dust , dust bunnies , filthy , sensor , cleaning DLSR sensors