Microsoft's first-ever iPhone application is a slick photo viewer with a browsing capability that handles a large number of photos on a mobile device screen. The Seadragon mobile application is free through Apple's application store. It a product of Microsoft's Live Labs division, which focuses on developing Web-based technology and applications. Seadragon incorporates the Deep Zoom feature, which is also integrated into Silverlight 2, Microsoft's multimedia tool. It allows a user to quickly magnify a particular area of a photo, regardless of its size.