mike_halliwell Posted March 14, 2020 Share Posted March 14, 2020 UV-1a or WU-1a ? I don't think we're going to find out......:( 2 Link to comment Share on other sites More sharing options...
robbypedrica Posted June 19, 2020 Share Posted June 19, 2020 Quick note to say that I also ran into this issue after upgrading my D7100 to 1.04. I took my 17-50 to the local sigma service centre and they had it sorted out in less than 10 minutes. Great service. Working perfectly on my D7100 now. By the way, I call my 17-50 "The Tank" ... Link to comment Share on other sites More sharing options...
mike_halliwell Posted June 19, 2020 Share Posted June 19, 2020 local sigma service centre and they had it sorted out in less than 10 minutes Good to know Sigma customer service is on the ball....:) Where's 'Local'? Link to comment Share on other sites More sharing options...
robbypedrica Posted June 21, 2020 Share Posted June 21, 2020 Good to know Sigma customer service is on the ball....:) Where's 'Local'? Local is Cape Town, South Africa : ) Link to comment Share on other sites More sharing options...
ChiMan Posted December 31, 2022 Share Posted December 31, 2022 Hey all! I had the same issue…D7100, upgraded firmware to 1.05…sigma 70-200 no longer able to autofocus. Thought the lens would have to be sent in for repair. Changed to 1.04…still not resolved. Today, after coming ti this site…and changing back to 1.04, problem fixed! It’s been almost a month. Thanks to all those who contributed to this post. Life saving. Link to comment Share on other sites More sharing options...
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