Born in Ontario in 1957 but now based in London, Mark Lewis began as a photographer, then switched to making 35-mm color films, which are mostly unedited and generally run the length of a four-minute reel; transferred to DVD, they are projected as loops one after another. Lewis continues to take pictures of his film locations, and here, in the first installment of a two-part exhibition, he showed three recent films, none more than four minutes long, along with five location shots, including three for films shown here. (The second show featured three earlier films.)

Isosceles, 2007, is a meticulously