Question about Sigma 24-70mm F3.5-5.6 AF Zoom Lens

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I have a Sigma 24-70 2.8 EX DG Autofocus will not work.

I just got this lens for Christmas 07 with less than 100 pictures on it and now the autofocus doesn't work. When I depress the button it slightly moves around infinity symbol but that is it. Sometimes I can depress the button all the way and it wont take the shot. I can manually focus and when I move the focus ring from manual to auto ever so slightly I feel & hear a click. Then sometimes it will focus but inevitably ends back over at infinity. I have it on a Canon 20D and my Canon 70-200 2.8 has no trouble when I attach it, regarding focus. I bought this lens because the price was better, I;m beginning to wonder if I get what I paid for. Any thoughts.

Mike

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Call Sigma. Here is the information. They will be able to help you for sure. To request assistance by phone in the US, their technicians are available from 9AM to 5PM Eastern Standard Time, Monday through Friday. Please call: (631) 585-1144.
Customer Service Department call toll free (800) 896-6858.
You can also fax them 24 hours a day.
Fax: (631) 585-1895 or (631) 585-7661

Posted on Jan 25, 2008

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Posted on Jan 02, 2017

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Sigma 24-70 2.8 EX DG AUTOFOCUS PROBLEM


I would send it into sigma. They are in NY,
They are really quick about checking things out and I have neverhad them charge me to look at a lens and tell me whats up. aot of times they will just fix it while it there is it looks like something is worn out from normal use.
its a great lens. Some would say its a slower focus. than the Canon brand and you do get what you pay for but its hard to spend as much on canon lenses as they want. :)

Hope that helps,
Caleb

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