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11-09-2013, 10:35 AM   #61
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QuoteOriginally posted by Joojoo2010 Quote
pentax and sdm/dc/usm lens is not very good combination
You really should take DC out of that statement. As some of the prior posts have pointed out, the DC autofocus motor in the DA 18-135 has a much lower failure rate than the SDM motors. It is also noticeably faster than the screw drive focus in the 18-55 kit lens, even though the mass to be moved is greater. Finally, even if I turn up the volume on my hearing aid, it is silent.

11-09-2013, 10:47 AM   #62
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Yeah maybe u r right. Anyway lets wait few more years to see how dc will do then after much use...
11-15-2013, 07:58 PM   #63
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Fixed.
QuoteQuote:
REDO
SHIFTED OPTICS FOR OPTIMUM FOCUS POINT RESOLUTION
CLEANED AND CHECKED TO MANUFACTURER'S SPECIFICATIONS
VERIFIED EDGE TO EDGE SHARPNESS WITH OUR TEST CAMERA BODIES.
Should be back in a week or so.

The issue the lens suffered from is probably the same as the one described in this LensRentals blog post.

--DragonLord
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