PCPhoto
March 19, 2024 HelpLine |
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Larry K. Via the Internet A) You did have problems with dust before. If you shot transparencies, anytime you projected them, you fought dust. If you shot negatives, you fought dust when printing. But you’re probably referring to image capture rather than projection. SLRs have problems with dust simply because the camera isn’t permanently sealed. Anytime you take the lens off the camera, you’re exposing the camera’s interior to dust. With film cameras, any dust entering the camera may have landed on film, but the film was soon replaced when it was advanced to the next frame. On some occasions, large pieces of dust would get caught in the film path and you’d end up with long scratches all along the entire roll of film. With digital SLRs, the imaging sensor is fixed in place, so dust that lands on the sensor remains until it’s cleaned off. It’s important to follow a few steps to minimize dust:
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