The fishing trawler was returning to port through the Golden Gate. As the boat headed for the channel of moonlight, I realized that a long time exposure just wouldn’t do. I wanted to capture the trawler in the moonlight, not an abstraction of the boat rendered into colored lines of motion over the exposure duration. So I boosted the ISO to 1,000 and opened the shutter for a brief (for night) period of 2/5 of a second.
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[300mm in 35mm equivalent terms, 2/5 of a second at f/5.6 and ISO 1000, selectively post-processed for noise, tripod mounted.]