Built-in Star Filter: photographs tiny light sources to create a four-beam flare on light spots Coated, Improved Glass Lens: one element of glass lens sharpens the clarity of the images Bulb Function (Long Exposure): helps to capture the trail of moving objects, mostly at night Tripod Hole: uses a tripod to keep your camera steady to support long exposure photography Film-saving: has twice as many images per roll - doubled!