Autofocus glitches in Nikon menu for Sigma 18-50 f2.8-4.5 lens
Photography Asked by coxipus on November 30, 2020
I have sold a Sigma 18-50 f2.8-4.5 OS HSM to an internet buyer. The lens worked fine, but after receiving it today, he said that whenever he turns on autofocus on the lens the camera has a glitch in the autofocus area, switching very fast between AF and M in the menu.
I have never encountered an issue like this with the lens. I believe it could be the AF / M switch broken or something electrical doesn’t work on it.
One Answer
It's a lubrication problem, they don't put enough lubricant into the optical tube mechanism and it wears off or gets stuck. the lenses are still usable in case you would like to open the lens and lube it up properly or you simply can support the lens while autofocusing, with your finger.
Answered by dood on November 30, 2020
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