Fisheye lens options

I know there is the fairly expensive option of the 10-17 Pentax fisheye but are there any manual lens option for a fisheye?

Unfortunately fisheye lenses for full frame cameras are not fisheye on digital as we only use the centre of the field of view.

You could try the front of lens fisheye converters that are offered (see the latest AP for at least one) but they will not be spectacular quality.

Russian Zenitar fisheye and I think Samyang have just bought out a manual one as well (also under the falcon, Vivitar names plus a few more probably).

Quote: Samyang had been announced as a diagonal fisheye with a focal length of 8 mm, giving us a field of view of 180 degrees on a DX sensor (1,5x crop factor).