In Desceent Exposure April 2006 pg58

[Anonymous]

Great article but I feel I must make one minor comment since we’re talking a lot about timimg and exposure. While our power here in the USA is running at 60 Hz, each cycle has 2 peak voltages, one above zero and one below. This makes fluorescent lights flicker at a rate of 120 times a second, not the 60 times mentioned in the article. This may or may not have an effect on the timimg you choose for shutter speed on your camera. 😀

[Author]

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