You may unknowingly be part of Alexander Ferguson's new exhibit, the Albuquerque Pedestrian Project at the Harwood Art Center (1114 Seventh Street NW). He tapes processed film to the ground in certain areas of the city, creating photographic images without a camera. Elements, people, animals and time create the image rather than light. Ferguson also made sound recordings at each site. You can hear these through headphones mounted on the walls of the exhibit, placed beside each corresponding photograph. A reception for the exhibit will be held Friday, Sept. 16, from 5 to 8:30 p.m. in the Harwood's North Gallery. Runs through Sept. 28. 242-6367.