Alfred Molon <alfred_molon DeleteThis @yahoo.com> wrote:
>
>You didn't mention how to set the exposure. Just choosing F8 or F11 and
>exposing for the duration of the firework might lead to under- or
>overexposed shots.
He did mention using a low ISO, like 100. That's the
trick to using "bulb" for shutter, because essentially
the shutter is open for the entire time any particular
display exists. Exposure is controlled by the ISO and
aperture.
Using f/16 or f/22 probably would soften the image a
little because diffusion is more of a problem as the
aperture is stopped down. But f/16, for example, with a
good lense might be better than having a slight over
exposure too.
--
Floyd L. Davidson <http://www.apaflo.com/floyd_davidson>
Ukpeagvik (Barrow, Alaska) floyd DeleteThis @apaflo.com
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