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The Pigeon Point Lighthouse, off California Highway One between the towns of Santa Cruz and Half Moon Bay, has alerted 19th century and early 20th century ships and their crews to the treacherous waters defining this portion of the Pacific coast. The lantern room of the lighthouse tower was equipped with a 1000-watt Fresnel lens composed of 1008 hand-fitted and polished lenses and prisms capable of producing, when electrified, 500,000 candlepower of illumination. The lighthouse has witnessed the evolution of power sources: originally with a lamp that burned refined lard oil (pig fat), then mineral oil (kerosene), and electricity in 1926 with two, 1000-watt lamps. Only one lamp at a time was used, however; if it was "sensed" that a lamp was going to "burn-out," a device would rotate the second lamp in its place. Aperture Priority Exposure, Ink Outlines Filter on the lens, Pattern Metering
%Thu, 2 July 2020
m1500 x 994 pixels