Quote:
Originally Posted by LAW
The obvious advantage of GND over processing is it allows you to shoot star trails over a significantly brighter foreground.
http://www.aussievault.com.au/media/...ge-966-644.jpg
(Not my shot, it's off OCAU)
No amount of bracketed shooting or HDR processing would bring out this level of detail.
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That type of shot is still achievable with post-processing, without a GND.
Especially since the star trails is made up on small individual exposures.
You can just use masking to use one or more of the exposures for the foreground.