gunnerhedge
Senior Member
Hi all, I bought a second hand 150-500 mm sigma lens to use with my d7200, was all fine but all of a sudden weird stuff is happening. The autofocus doesn't want to work, if I take it off and back on again sometimes it comes back to life but it might take several times before it works. I've looked at the mount and can't see anything that screams wrong or broken and basically I'm scratching my head and getting frustrated. Anybody have any ideas on what to do or shall I contact sigma and see if they can do anything?
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