A quick test from my backyard last night, with the Canon 5D Mk II and Samyang 14mm.
Really impressed with the lens, such a huge FOV.
ISO3200, 30s exposures, f/2.8.
309 exposures.
Quite easy to use, used liveview to focus on a bright star and locked the shutter on the intervalometer for 30s exposures.
Processed in Lightroom and Sony Vegas. The lens fogged up a few times but it was good to get some practise in again.
Best to watch in HD to avoid the compression artifacts:
Youtube:
http://www.youtube.com/watch?v=s6rUmckz6XY&hd=1
Vimeo:
https://vimeo.com/42402061
Thanks