DPReview.com is closing April 10th - Find out more

Canon 500D autofocus stopped working with Sigma lenses

Started Jan 2, 2016 | Questions thread
ForumParentFirstPrevious
Flat view
csjoe New Member • Posts: 5
Canon 500D autofocus stopped working with Sigma lenses

Hi all,

I have a Canon 500D camera. The AF suddenly stopped working with my Sigma lenses:

10-20 1:4-5.6 DC HSM

18-35 1:1.8 DC

There are no noises it looks like it's not even trying to do anything apart from the flashing red af points.

Manual focus works fine, the camera can sense the correct focus.

I've tried the camera with my Tamron 90mm and the AF worked fine.

I've tried the Sigma 18-35 lens on my friend's camera and it worked perfectly.

I've blown out any dust in sensor cleaning mode.

Anyone has an idea what else should I try?

Many thanks,

Jozsef

ANSWER:
This question has not been answered yet.
Canon EOS 500D (EOS Rebel T1i / EOS Kiss X3) Sigma 18-35mm F1.8 DC HSM Art
If you believe there are incorrect tags, please send us this post using our feedback form.
ForumParentFirstPrevious
Flat view
ForumParentFirstPrevious
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow