I'm looking at this photo in http://www.astrobin.com/17455/
In the description the author specifies:
100 x 4 second exposures at f5 and ISO12800, Canon 5DmkIII + 24-105f4L@105mm No tracking, just on a photographic tripod.
Everyone talks about shortest focal length and lower aperture when shooting Milky Way, and this guy does it with f5 How is that possible?
Is it just the fact that the photo was taken in Australia where is it is a lot more visible (less light pollution)?