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Showing results for tags 'Copper Contacts'.
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I have a Sony A7ii and two Sony lenses (28-70 & 24-240 zooms). The other day I took off the lens to blow dust off of the sensor. When I reattached the lens, it wouldn't auto focus, and the aperture displayed with a dash instead of the number. I reattached the lens, tried a different lens, replaced the battery etc... I called Sony, they told me to gently wipe the copper contacts on both the camera and lens with a cloth, and the problem resolved itself. The next day, the problem re-occured a couple of times without the lens ever being removed. One other time, I couldn't get the camera to power on at all. I flipped the switch several times, and it finally came on. It's one month out of the one-year warranty (of course). If any of you have had similar problems, or have a solution, I would love your input.
