rgrenaderphoto wrote:
Try this: remove your lens, point camera to white surface, like a wall or something that does not have color. The front of your refrigerator or an appliance would work. Bring the image into a photo editor and make it negative (Ctrl-I in Photoshop). Use the Magnify tool to look for white spots. Then you'll know.
Fotoartist wrote:
I don't think removing your lens works when taking your "dust finding" shot. Anybody agree or disagree?
Never tried it myself, but it would have the opposite effect of using a small aperture to create a point source of light, which is critical in finding
the offending UFO's.
Sounds like a waste of time.