See the following link for maximum exposure time without tracking (a
simple calculation based on focal length) No crop factor adjustment
required.
<http://ralphnordstromphotography.com/wordpress/articles/exciting-nighttime-photography-10-easy-steps/>
Chuck Norcutt
On 8/13/2014 9:30 AM, Sawyer, Edward wrote:
You probably want a tracking mount if you want to keep the sky still.
Light-painting the foreground is the usual technique. You could
light-paint with flash but it can be a bit harsh sometimes.
Sometimes you could do it in a single exposure but often with digital they
are blended. Personally I think the single exposure method is more
interesting and challenging. And a must for film-only shooters.
An example (not mine):
http://www.fredmiranda.com/forum/topic/1307335
-Ed
Just recall that the flash and ambient exposures are separate. If the
ambient exposure is a long one there's no reason why you can't make them
at different apertures. Experiment with the flash exposure at the same
ISO you intend to use for the ambient. Play with the aperture for the
flash till you get it to your liking. Then put the two together adding
the ambient after the flash and at a different aperture if desired.
So what you're saying is to take one photo of the sky itself and
then another of the nearby landscape that's illuminated with the flash,
then combine them? That seems like an interesting process. I was
thinking of doing it with a single photo.
Chris
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