BAR HARBOR — The spring semester black-and-white photography class at Mount Desert Island High School is displaying their work at The Criterion Theatre here in town for the month of June.

The pinhole photographs, which have been enlarged digitally from 4-by-5-inch paper negatives to 20-by-25-inch prints, demonstrate the power of the earliest form of image projection – the camera obscura. The earliest mention of a pinhole camera was as early as the fifth century B.C.