Question about Sigma APO 50-500mm F4-6.3 EX DG/HSM Lens
My Sigma 50-500 and Pentax K200d worked beautifully, the other day I went to take some pics but the motor runs but there is no focussing
Found this myself check manual focus ring (closest to camera) maybe ring has moved to "manual"position. This ring moves backwards and forwards between "manual" and "auto" and may need pushing home completely
Posted on May 28, 2009
Clean the lens at both the sides, the mounting end and the front end.
I had the same problem and got it cleaned to get it working back.
Its bcz the sufficient light entry will be cut when dust accumulates.
Posted on Feb 21, 2009
a 6ya Expert can help you resolve that issue over the phone in a minute or two.
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Posted on Jan 02, 2017
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