The western catalpa tree at the Vietnam Memorial in Capitol Park, is in full color today. This photo was made November 9, 2011 using a Canon 5D MkII and a Canon 24-105 zoom lens set to 67mm. The exposure was 1/90 sec. at f/11 using ISO 400 with a polarizing filter. For more information on exposure and filters, check our Tips and Techniques section. 207