Nothing else suitable for use with full frame 35mm cameras or digital cameras like the Canon 5D. At full frame, it's so wide you can almost see behind you (well, not quite, but close to a 180-degree field of view). It's not a fisheye, so straight lines stay straight. There is some vignetting at 12mm, but it's less than my Canon 17-40 L lens at 17mm. This lens pushes the limits of physics so it's not as sharp as some lenses, but it captures a much larger field of view and delivers sharp imagesβ¦