Anthony Farr wrote:
First you need to isolate the fault to either the lens or the camera
body. You have other camera bodies so start by determining if the
Bigma behaves or misbehaves on those.
regards, Anthony
I've had similar problems with the lens on other bodies. I don't tend to
use other lenses for birding. Cleaning contacts seems to be a good
suggestion. This was just the time it happened and I actually thought
to mention it. Since it's sporadic, that makes diagnosis a bit more
challenging.
On 18 December 2017 at 17:49, Larry Colen<[email protected]> wrote:
This afternoon I was photographing a heron at the Waldport seawall with my
K-1 and sigma 50-500 during low tide. It had flown from one spot to
another, I was walking back to the new spot, photographing as I went, and at
one point the camera went completely out of focus, then wouldn't even
attempt to focus. I eventually got it back on track, got some more shots,
then the bird spooked, flew off (past me) I tried for some flight photos but
the lens again went completely out of focus, then refused to do anything to
get back into focus. With the bigma I couldn't (easily) manually focus and I
completely lost my opportunity for those BiF photos.
Does anyone know what causes the focus mechanism to freeze up like that, or
any way to convince it to try to refocus?
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Larry Colen [email protected] (postbox on min4est) http://red4est.com/lrc
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Larry Colen [email protected] (postbox on min4est) http://red4est.com/lrc
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