It was a question of “when” and not “if,” but Microsoft has finally released its first and long-awaited iPhone application. In the bad news department, it’s nothing mainstream at all and is, instead, sort of skunkworks research project instead of a major, tier-one application. I guess you can’t have everything.

Introducing … Microsoft … Um… Seadragon Mobile.

Want to see giga-pixel images on your iPhone?   Now you can--with Seadragon Mobile.

Seadragon Mobile brings the same smooth image browsing you get on the PC to the mobile platform.  Get super-close in on a map or photo, with just a few pinches or taps of your finger.  Browse an entire collection of photos from a single screen.  You can browse Deep Zoom Images that you can create from your own pictures or your Photosynth collection (or anybody else's).

Seadragon Mobile is available for free at the iTunes App Store.

Thanks to Neowin’s Tom Warren for the tip via IM.