08/15/10 81 W, 1 I - + 12 - 3 Detecting Dirt on DSLR Sensors

Can we talk dirty for a little while? Here's a neat technique for determining just how dirty the sensor of your digital SLR camera might be. Open a blank document file on your computer, so you have a screen of white. Take a picture of the white screen. Open the picture in your favorite image editor. Manipulate the contrast and brightness until you see specks. Viola! Commence sensor cleaning.

Even better than a computer screen would be a flat, white ceiling with the camera laying flat on a table. That way, your colors/lighting should be uniform on the sensor & easier to see the spots without as many contrast/brightness adjustments. (Note the darker areas in the bottom of the photo)
dipatch - 08/17/10 - 04:54

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