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I took short exposures handheld with the Canon 70-200mm f/4 on the 1D, while shooting long exposures of
about 3 seconds on ISO-100 Agfa film in the old Canon A2. (These are all non-film pictures so far!).
The brightness of the fireworks varied greatly. This is 1/80s at ISO-1600! Actually, I should have
taken Kevin's advice and shot at even higher speeds on the hand held, like 1/250s.
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They also had 3d cubes there! How do I knkow it's 3d? If it was 2d, we would have seen several
flattened ones, because you can't control the exact angle when the firework explodes, but they were all
cubic. Last year, I remember seeing several "flat" 2d smile faces.
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