My Sigma 150-500mm 1:5-6.3 APO HSM lense is not responding to my camera. It initially responded but does not auto focus anymore. All switched in correct position. I am in the middle of Africa and there is no dealerships here!

Asked by Martin Smith on 05/22/2014 0  Answer

ManualsOnline posted an answer 9 years, 11 months ago

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