Sandra Blow was described by Roger Hilton as an ‘heroic painter’. Certainly her late artworks are heroic in size. Currently her canvases can be seen at three locations in Cornwall. The Exchange in Penzance is showing a dozen works from the 1990s onwards, including Brilliant Corner II. Familiarity with reproductions of Blow’s work is nothing like the awe-inspiring experience of getting up close to these enormous originals.