ruliyanto1

<p>I had the same problem 2 days ago during a wedding documentation using a 5D3, a 600exrt attached to the hotshoe and a 24-70mm l (the 1st version), I turned off the camera and turned it on again but didn't solve the problem then I turned it off again unplugged the lens from the camera body, waited for several seconds then plugged it in again to the camera and turned the camera on again, the problem solved so I could continue shooting until the wedding event ended.</p>