My next search will be!

I think I have caught the dreaded Lens buying disease. I want to get a Auto Focus Fish-eye lens. The Zenitar lens from Russia is nice, but not AF. Any ideas out there.

There is the Pentax 17-28 fisheye zoom which appears fairly regularly second hand an may still be available new. The idea of a fisheye zoom seems daft to me.

Otherwise Sigma do a 16mm full frame fisheye and an 8 mm fisheye which gives a circular image about 23mm diameter.

I keep looking for the SMC 17 f4 for sensible money but no luck so far

There is also a SMC A 16 2.8. And there are also hens teeth....

Autofocus on a fisheye is probably unnecessary as the depth of field is huge - just stop down to f8 and go!