I saw nothing like that on my two 16-50 SDM failures. Just dead autofocus.

Chris

On 16 December 2013 23:57, Igor Roshchin <[email protected]> wrote:
>
>
> I have a question for those people who had SDM (or in general, lens
> chip) failed and replaced.
>
> I see that with one of the SDM lenses my K5 has the aperture and speed
> settings rapidly (as in crazily) fluctuating. (And the focus shows "MF",
> regardless of the focus selector position.)
> I was wondering if this is one of the symptoms of the failed chip or
> that could be for a different reason.
>
> When I had a previous chip failure, I didn't see anything like this.
> When the chip failed in your lens, did you see this type of a
> fluctuation?
> I wonder if could be something else that happened to the lens.
>
> Igor
>
>
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