Why dust only visible with a small aperture?

Sensor is the eye" a digital camera, therefore must be maintained appropriately. Dust often makes a dark spots on the final recording.

The spots are disturbing especially when shooting with a small aperture setting. The explanation is quite simple; with a large aperture more light pass over in the digital camera. With a smaller aperture the dosage is reduced significantly, and more sensitive.

If you shoot with a wide aperture the light meter is less accurate and less targeted than a small one. The dust caused shadowed and blur sensor. A small aperture on the other hand focuses the light rays nearly parallel to each other. As a result, even the most subtle contours of the dust shadow can be detected accurately. You should make some test shots with a small aperture and then view these on a large screen. Please note for manual cleaning of your digital camera.

Title Post: Why dust only visible with a small aperture?
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Author: the Wicaksonos Family

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