The iPhone 4S brought true HD video recording (1080p, up to 30 fps) to the masses, and fortunately for iPhone owners, the accessories industry has wasted no time in developing products to make your videos even more professional-looking. iStabilizer's Dolly (US$59.95) has arrived in time for you to shoot your summer vacation videos like a pro. Be sure to enter into our giveaway of an iStabilizer Dolly later in this post.

Design

First, let's talk a bit about dolly or tracking shots. These are a staple of cinematography, using a wheeled cart (usually on tracks) holding a movie or video camera to smoothly move the camera towards, away from, or perpendicular to the subject. For iPhone videography, you certainly don't want to have to carry tracks along with you, and that's where the Dolly comes in.

At first glance you might think that the Dolly is a child's toy. It features two sets of skateboard wheels mounted to a short metal body, with an ingenious flexible arm that bends into a variety of positions. At the end of the arm is a mount that can hold an iPhone, an iPod touch, a GoPro camera (with an optional GoPro tripod mount), or even a lightweight video camera. You don't want to overload the Dolly, however, so don't plan on mounting your DSLR on the end of the arm.

At 1.25 pounds, the Dolly is light enough to fit into your backpack or a larger camera bag so that it's available at any time. The wheeled base is about 8" wide x 3" high x 5" deep, and you can remove the arm (which can stretch as far as 11") for compact storage.

My favorite feature of the Dolly is how you can adjust the angle of the wheels fore and aft for making arcing pans. The bolt that holds the front and rear axles to the frame has thumb screws at either end, and there are