JOHN MARIN, a painter best known for his combination of abstraction and realism who depicted Maine over the course of 40 years, has received plenty of attention since his death in 1953.

But it’s been 20 years since any museum has mounted a major exhibition, and no museum to date has concentrated on the late period of his career.

Beginning today, the Portland Museum of Art opens a comprehensive examination of his life and career from 1933 until his death, focusing solely on the time he spent at Cape Split on the Down East coast. “John Marin: Modernism at Midcentury” will remain on view through Oct. 9.