A long time ago, in a world that only used film, a lens was developed to see the whole sky. Cloud studies for meteorological use prompted the invention of the fisheye lens. It wasn’t long until the keen eye of the “art” photographer saw one and decided to use it to make images that could not otherwise be made. Fisheye images aren’t like rectilinear images, where straight lines mostly stay straight… fisheye lenses give you a convex rendering with curved straight lines, and encompass a huge area into a single image. Imagine if you will the end of a dog’s nose about six inches from the front of the lens… yep, you’ve seen photos with fisheye lenses before.
There are two basic types of fisheye lenses, circular and full-frame. The full-frame lens covers the full 35mm or FX sensor size frame with image – no cut-off corners. The circular fisheye is designed to project a circular image slightly smaller than the height of a 35mm or FX sensor, with vignetted corners. The second type is now available for your Lensbaby Composer (or any of the other Lensbaby models that accept the optic swap system with a special adapter).