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03-23-2008, 05:27 PM   #1
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What does your SDM lens sound like?

When your lens is focusing, what does it sound like starting, stopping, and while in motion? My 16-50mm from day one has had a chirp to it after it has done full travel maybe 5-6 times after a sitting, and will chirp on start stop, and have a faint chirp while in motion. The main focusing motor makes a constant "whirr" during its motion otherwise. Manual focus is smooth, nothing out of the orirdinary besides the chirp.

My 200mm DA* makes a click at start and stop, and just a whirr sound in motion. No chirp or anything like the 16-50mm.

One older 200mm DA* that was in the office that has problem been through countless hands and 20-30k pictures had a similar chipmonk chirp to its SDM motor.

Another question is has anyone experienced SDM lag right after the camera is powered up after sitting overnight? I swear I have had a 2-3 sec delay after the camera fired up before the lens moved into focus.

03-23-2008, 05:49 PM   #2
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I dont have an answer for you just yet, but how do you have an older 200mm DA* that has 20-30k pictures on it?
03-23-2008, 05:53 PM   #3
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Review model that someone in the office was working with.

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16-50mm, camera, da*, k-mount, lens, motion, motor, pentax lens, sdm, slr lens, sound
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