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01-18-2011, 12:27 AM   #1
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Join Date: Sep 2009
Posts: 14
Broken Anti-Shake results in Focus issues

Way back in late September 2009, I sent my K7 in to the auth. Australian distributor for a possible anti shake failure. They returned it and said no fault found. (I trusted them but when i half pressed the shutter and turned the camera upside down i could hear a clunk). Some of my lens's weren't as sharp as my k20d but overall i though my body was out of alignment.

To combat the sharpness issue, I bought a LensAlign PRO and the photos were definitely sharper, but as the sharpness reduced i would test the settings i had and found that they were different every 6 months.

This month im off to south africa, So I decided I would take the lens's for a professional alignment (not a pentax repairer, but are a repair for nikon, canon lecia). I just got the quote back and they are replacing the anti-shake unit as they believe that that is part of the issue they are also shimming the lens, testing edge to edge focus etc.

Anyone else had a anti shake unit failure?


01-18-2011, 07:18 AM   #2

Join Date: Mar 2009
Location: Perth Australia
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Posts: 1,511
Yes my K20d had a anti shake failure and Pentax replaced the guts of the camera under warranty.

Basically if anti shake was on, and the speed was slow enough (anywhere below 1/500th) The image would be ruined from anti shake adding blur

At higher speeds it was not a problem as 1/2000th etc was enough to totally freeze the 'action' of the faulty shake unit. Turning SR off fixed the problem.
01-18-2011, 07:33 AM   #3
jeffshaddix's Avatar

Join Date: Jun 2010
Location: Albuquerque, NM
Posts: 1,371
Wow that's quite a story. Glad you found out when you did. Did you have any other indicators that your SR went out?

Sometimes I notice a scratchy sound with SR on, but I imagine it was just a speck of dust on the platter, and it doesn't seem to affect the sharpness (yet).

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