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11-20-2012, 02:18 AM   #1
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K01 - Noisy AF

Hi all,

Just got my K01 today with the 40xs. First thing I noticed was that the AF was pretty noisy, there's a noticeable grinding sound during auto focus.

Just wondering whether this is normal or should it be completely silent.


Last edited by BigMike; 11-20-2012 at 02:47 AM.
11-20-2012, 03:31 AM   #2
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Join Date: Sep 2010
Location: Lyon area
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That's pretty normal on any Pentax autofocus lens.
If you need silent AF you'll need SDM/HSM lenses (that have a silent motor inside the lens): these include DA17-70, DA18-135, DA*s, and some Sigmas.
Till then have fun with you new toy and don't worry, it's not defective
11-20-2012, 03:56 AM   #3
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Original Poster
OK thanks for the reply. Coming from a P&S background, all this is new to me. I shot previously with an Olympus PEN + NEX 5N and didn't recall such noisy AF so automatically thought it might be defective. Another thing I've learnt, haha

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