Christine Aguila wrote:
squeaks when focusing--as if a little birdie is chirping inside. I'll be taking it in, to be sure, but any thoughts on what might be causing it to squeak/chirp? Cheers, Christine
Mine did that for a while. A very faint squeak or chirp, like an annoyed mouse. I found that the manual focusing friction had increased too. I also noticed that it would fail to auto focus sometimes when the distance from where it was to being in-focus was small.
I hadn't used that lens for a couple of months, and after I manually "worked" the focus barrel a number of times and took the lens out to give it a workout shooting the noise went away and all has been well since.
I'm guessing that the lubricant was unevenly distributed and the mechanism was a bit sticky. That would cause the SDM motor to work harder--strain a bit--and likely caused the servo positioning signals to become more audible, thus the faint squeaking.
I *suppose* I should really send it in for a look-see, but I tend to follow the "if it ain't broke ..." folk wisdom.
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