BackdoorArts
Senior Member
Thanks for the update. Weird that they'd both go at the same time.
Just an update, both lenses are back from service. I've been shooting with them all week and they seem to be as good as new.
As mentioned before the Sigma appears to be a known issue, potentially from a bad batch. People which have had this issue typically never have an issue again after repair. The Nikon 50mm came back from service with a report saying they opened the lens and re-seated the af motor and cleaned it. Two very different issues.
So it looks like the D800 wasn't to blame in the end.