A multiple exposure image of a sunset as a test for the AUgust 21, 2017 total solar eclipse, consisting of:<br />
- One daylight unfiltered exposure of the initial sky and Sun, but masked to reveal just the bright overexposed Sun at the start of the sequence<br />
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- Multiple exposures of the Sun taken through a Seymour black polymer solar filter for 1/6 sec at f/4 and ISO 100, taken every 15 seconds, but a selection of frames taken every 5 minutes used here, and layered in with Screen blend mode. The 5-minite spacing works well for a still image composite but a time-lapse movie would require frames taken more often, such as every 15 seconds. Taking them that quickly assures you have all the frames you need for either end result. Just be sure the memory card has enough space for all the frames. <br />
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- A final unfiltered shot of the setting Sun, metered on Auto Exposure supplies the sky and foreground, and setting Sun itself on the horizon. <br />
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The test helped determine the best exposure for the filtered Suns, as well as the twilight sky on Auto Exposure, and layering methods. <br />
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Taken using a 16-35mm Canon zoom set to 20mm (similar to what&rsquo;s needed at my eclipse site), and Canon 6D.