Hi Guys, Im off to Iceland in about 8 weeks 
I currently have a Canon 6D with 17-40 f4, 24-105 f4 and a 80-200 2.8. Do you think the f4 on the wide angles will be enough for capturing the aurora? I have been advised to get a 2.8 wide angle zoom but don't really want the expense. I can borrow a 24mm 1.4L from a friend if need be but I don't really want to be carrying a lens with a focal length I've covered twice. Any advice is welcome 




