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10-01-2007, 12:14 PM   #1
konraDarnok's Avatar

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k10d mirror up noise

I didn't notice this noise until yesterday. Does your camera make a noise, like a motor running, when the mirror is in the up position?

It's the same if I'm taking a long exposure. . or a short one for that matter, or when the mirror is locked up. I can clearly hear it when the camera is close to my face. . .and if you put your ear against the camera, you can hear what sounds like a motor running. . .although it isn't really smooth sounding, rather mechanical.

Otherwise the camera doesn't make any noise at all, except for focus beeps.

10-01-2007, 12:30 PM   #2
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Haha.. Yep.. like a timer is running. You hear when it's really quiet (little ambient noise) and you set long-exposures. Just like an old-school 35mm.
10-01-2007, 12:40 PM   #3
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K100D "sounds" the same. I typically heard it when cleaning the sensor and keeping the mirror up a while.

Jan V.
10-01-2007, 12:42 PM   #4
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cool. this is normal then.

10-03-2007, 05:24 PM   #5
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I noticed that sound too with k10d
10-04-2007, 06:38 AM   #6
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That noise is the Shake Reduction mechanism humming. It does it in sensor cleaning mode no matter what the Shake Reduction function is set to. My guess is that the mechanism makes that noise whenever the mirror is up, regardless of whether SR is active or not. Only when SR is on does the camera release the sensor and let it float.

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