Has any one here noticed grid like artifacts in strong flair areas with their Olympus E-M1 II. These flair areas almost always have a degree of magenta cast. On a recent two month trip in Italy with two of these bodies I had a number of images displaying this issue, to various degrees.
The enclosed image is not a keeper but displays this issue well. The enlarged magenta flair area shows a strong grid like pattern that must be some form of sensor refection or interaction with the strong light.
This image was with the 40-150f2.8, but also seen even more with the 300f4, and with a few images on the 12-40f2.8. I do not recall any artifacts using the 7-14f2.8. The light source can be flair from the sun or even street lights. I can create the effect on demand by shooting towards a raw strobe.
So far no answer from Olympus on the issue. There are some other posts on line about this and I fear it affects all of these bodies and not fix will be forthcoming.