Question about Cameras
If the minute sand particles is in between the focus ring and lens barrel, you need to get it repaired. If it is superficial and only in the seam of the focus ring, you could try to cleaning with paint brush and some iso-propyl alcohol or methanol.
Note - DIY is never recommended in these problems as more often i have seen people damaging the camera's more often than repairing it.
Posted on Aug 03, 2010
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Posted on Jan 02, 2017
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