Sol 5093, May 23, 2018. After taking one close-up on the La Joya target rock, the Microscopic Imager shifted position for another close-up of the rock (above), which partly overlaps with the first. (Click the image to enlarge it.)
A composite that includes both images (4.9 MB) is here.
Opportunity raw images, its latest mission status, location map, and atmospheric opacity, known as tau.