Nikon ships 8-15mm fisheye lens
Nikon is now shipping its new AF-S Fisheye 8-15mm f/3-4.5 ED lens. Compatible with both full frame (FX) and cropped sensor cameras, with circular fisheye at the 8 mm end on FX. Minimum focus distance is 16 cm (6 inches) so this lens should work well behind a dome. Suffice to say that Wetpixel will be reviewing it very soon!