Forum: Pentax SLR Lens Discussion
11-14-2011, 02:11 PM
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My 50-135 has the same problem. It is slow to get working but will usually catch up to me and work fine for awhile. Its hit or miss when it will. I recall another forum on here about that very same subject and I am looking for it again. The most likely cause is an SDM failure and in my case it is happening just after warranty is over (Suprise Suprise) so I guess I will find out soon enough how much it will cost to repair.
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