Does anyone know what the fix is for sigma 150-500 AF

Started Jul 2, 2014 | Discussions thread
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mikehudson New Member • Posts: 1
Does anyone know what the fix is for sigma 150-500 AF

Hello,

I have read a lot of accounts of the sigma 150-500 5-6.3 OS having issues with a "stuck" AF, being sent off for repair. Does anyone know what the repair entails, as I have purchased a lens which has this problem (probably not helped by delivery "issues" which included breaking the front element off!), and I'm keen to try and fix it myself.

I am comfortable taking a lens apart and have previously brought a Nikon 300 f4 back to life, although that was a much simpler AF system

I have read something about the AF/M switch itself being part of the problem, any more information that's out there I'd be very glad to see. Especially how to disassemble the lens!

Thanks in advance!

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