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Forum: Troubleshooting and Beginner Help
11-27-2013, 03:06 AM
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Press the lens locking button, rotate the lens and remove the lens from your single lens reflex camera. If you are using a digital SLR, place a body cap on the camera to prevent dust from entering it.
Inspect the lens thoroughly by looking through the lens from both the front and rear of the lens. You are looking for any foreign debris inside the lens or any indication that part of the lens has become loose and is impeding its operation.
Clean the electrical contacts on the rear of the lens. Any auto-focus lens relies on electrical signals from the camera to work properly. It may affect the lens performance if these contacts are dirty. Clean the contacts using a cotton swab moistened with rubbing alcohol. Dry the contacts using a microfiber lens cloth.
Inspect the lens barrel and the small gaps between the outer lens barrel and the barrel containing the lens elements. Small debris can become lodged in here and may affect lens performance. Remove the debris using a small needle. Do not use compressed air as this may cause the sand or debris to become further lodged inside the lens.
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