Long-exposure photography or time-exposure photography involves using a long-duration shutter speed to sharply capture the stationary elements of images while blurring, smearing, or obscuring the moving elements. The paths of moving light sources become clearly visible.
Saint Helier (/səntˈhɛliər/; French language: Saint-Hélier[sɛ̃t‿elje], Jèrriais: Saint Hélyi) is one of the twelve parishes of Jersey, the largest of the Channel Islands in the English Channel. St. Helier has a population of about 33,500, roughly 34.2% of the total population of Jersey, and is the capital of the Island (although Government House is situated in St. Saviour). The urban area of the parish of St. Helier makes up most of the largest town in Jersey, although some of the town area is situated in adjacent St. Saviour, with suburbs sprawling into St. Lawrence and St. Clement. The greater part of St. Helier is predominantly rural.