My DSLR has been working perfectly until some time in the afternoon today. This baffles me. From a certain point on today, this DSLR started producing artifacts resembling motion blur in roughly 80% of images. Resulting images are unusable and had to be deleted. I varied, aperture, shutter-speed, ISO, drive mode (even trying MLU and Self-Timers) to no avail. Most images come out with a strange blur pattern. Changing lenses had no effect either. It occurs with Stabilization On or Off.
Here is a 100% crop from the image I kept to show the issue:
There is no reason for any of the shots to show motion blur. This occurred in full daylight while photographing at a beach, shutter-speeds range from 1/250-1/500s (Shown is 1/350s with F/8 aperture) and ISO 200.
The focal-length here is 16mm on APS-C DSLR, but tried numerous focal-lengths between 16 and 135mm. In order to get some usable shots, I set the camera to Continuous Shooting but there is no pattern to it, some bursts were entirely blurry, some had one or two normal shots.