Leaky Walls - Infrared Photos on vacation in Montana

I just purchased a small infrared camera that attaches to your iPhone. It's called the Flir One. It's a little awkward to use because of the way it's attached to the phone (you have to take your phone out of whatever case it's in and insert it in the Flir One case which is a tight fit).

I used it a little bit when we went on vacation.

Here are a few photos.

The first one is from our hotel room in Bozeman, I believe. Obviously the dark colors are colder and the lighter colors represent warmth. You can see the leakage at the corner, you can see where the individual studs are in the wall. I wonder if they are metal studs because heat is conducted so much more effectively through metal. But the striking thing is the serious cold air at the intersection of the floor and the wall.

The second photo is from Big Sky, I think. Same problem, serious air leakage, cold air infiltration at the corner of the room where the walls intersect the floor. 

This view shows a seriously under-insulated corner stud.

I need to go over my house and take some photos. I have not done so yet because the daytime temperatures outside have been so close to my inside temps that it wouldn't show where the heat is leaking out and the cold is coming in.