Who: Catherine Yass
Where: TIFF Bell Lightbox, 350 King West
Why: British artist Yass, whose oeuvre includes surreally coloured photographs of factories and institutional spaces made from superimposed film positives and negatives, has a fascination with heights. She's filmed a high wire performer between two skyscrapers and the view from a crane over Canary Wharf. This vertiginous film takes as its subject a bizarre offshore lighthouse in the English Channel. The odd structure, a tray- or ship-like platform balanced on a single concrete column, has been compared to a sculpture or a spaceship. Shooting from a boat and helicopter and underwater, so the orientation of the lighthouse to sea and sky keeps changing, Yass leaves viewers wondering which way is up.