Weak electrical contact connection - Sigma 50-500mm F4.5-6.3 DG OS HSM

Started May 18, 2014 | Discussions thread
Daniel Clune
Daniel Clune Veteran Member • Posts: 3,451

Had exact same problem with my 50-500 OS and D800. Mainly while shooting video as when it lost contact the shutter would close and lose all the video I just shot. Really ticked me off. I sent the lens to sigma and they tightened up the mount. I have been using it now for a while and have not had the problem reoccur. I would also get dark frame pictures when this happened while shooting stills. So forget the electrical contact stuff and send it to sigma. Explain the problem and they should fix it.

It appears the lens has to be quite tight for this not to happen. Not sure if this is a Nikon lens mount thing or not. I used to shoot canon and never had this kind of problem with the 50-500 on canon.

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Nikon D800 Nikon AF-S Nikkor 200-400mm f/4G ED-IF VR Nikon AF-S Nikkor 24-120mm f/4G ED VR Epson Stylus Photo R1900
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