This is a ~90 minute time lapse taken at Mount Coot-tha Summit Lookout in Brisbane, Queensland, Australia on the afternoon of Saturday, 25 November 2011 using a Canon 550D DSLR and a Tokina f/4 12-24mm lens. This is my second attempt at a time lapse.
It's composed of 1046 individual frames, each of which were 4-second long exposures spaced 5 seconds apart.
To obtain long exposures during the mid-afternoon light I used a combination of a Cokin circular polarizer, a Cokin +4 ND grad filter and a generic +8 ND filter, while shooting at f/22, 100 ISO.
I used the Magic Lantern intervalometer feature to automate the exposure sequence.
The audio is Journeyman by Amon Tobin, from his brilliant album ISAM. The track may be bought in digital format from Amazon here: amzn.com/B004X8AQ0Y