Hi everyone. I am user of Nikon D 750 and after few months of using it I experienced problems with coloured patches and lines on my photos in high contrasted places( lines on the sky and patches on clear surfaces like sky and water. It's very annoying. I thought it's my Tokina 16-28 f 2.8 lens but problem occurs on Sigma 24-70 too. I checked my serial number and it's says that my camera is affected by flaring but I never experienced flaring as it was described. Could it be related to my issue? Please help.
Mine is affected too but what you describe is something else entirely. Could you maybe upload a photo so we can see the actual problem? It's hard to image what it could look like.