Hi guys, I have the chance to get some really great Milky Way shots in the next few days. Heading over to an area of my state that has pretty low light pollution. I've been reading a lot about shooting the Milky Way, and I'm in luck as moon will be going down at about 11 and a bit past that the next few nights. As I'm trying to go as wide as possible, I'm wondering if anyone has ever used this lens before. On the wide end of that lens, it looks like I can get up to a 42 second exposure or so before I get star trails, but I'm wondering if the slower aperture is going to make all of this too difficult without using really high ISO. My only other option is the 14mm Panasonic which gives me a little over a full stop more, but at the cost of half the time for star trails. Also concerned with vignetting from the 14mm when shot wide-open. I'll have two bodies with plates but only one tripod, I have the 7-14,14,25,45 to work with. I'd like to get some input from people that have done this type of thing before. I don't want to miss my opportunities here! I'll have some hills in the foreground so I think I can make it interesting. If anyone wants to take a peek in Stellarium of where I will be shooting from it's 47.53N 120.1W @ 2000ft. Will attempt shooting towards the S-SW and follow the Milky Way. Any input or advice would be appreciated!