An exhibit of paintings by Miah Nate Johnson opens at Wellfleet Preservation Hall, 335 Main St., on Friday, April 2nd. The show is on view Tuesday to Friday, from 10 a.m. to 4 p.m., through May 13th. Several years ago, Johnson suffered a stroke that left him unable to work as a photographer or oysterman. “The work you see,” he writes, “is art that I have produced during my recovery process.”