This 1280 x 720 HD MOV was shot using a Nikon D7000 and the kit 18-105 lens. The lens was set at 18mm, and all settings were manual. It was a very windy day and the condensation trails were dissipating quickly. This video is very similar to the one listed just before it.
I have found the 18-105 to be a good performing lens, especially considering it's price. The location of this flag in West Seattle is under flight paths from SEATAC as well as Boeing.