08-07-2020 02:07 PM - edited 08-07-2020 02:13 PM
08-07-2020 03:09 PM
That is weird looking. Turn off all of the noise reduction and lighting correction settings. Does it occur with all lenses?
08-07-2020 03:44 PM - edited 08-07-2020 03:46 PM
It is too out of focus to be on the sensor.
Does it ever move around?
Could be a light leak around the lens. Try covering the lens/mount junction with black gaffers tape.
08-07-2020 04:30 PM - edited 08-07-2020 04:31 PM
Shutter failure. My 30D looks the same when taking pictures with a fast shutter speed.
I had considered that. The lines are not straight, though. There are two nice curves.
08-07-2020 04:41 PM - edited 08-08-2020 05:08 AM