Cheapest sharp fisheye for FF ?

In past I had the Sigma & Canon 15 2.8
Are there any other cheaper ones like Rokinon, Venus optics, Irix,... ?
It's for partyphotography in dark clubs, so also f2.8.

I guess i'm not going to miss anything as a lot is sharp on a uwa.
With the ones above I could take pics without looking at f2.8 and everything was sharp.

I usually work at shutterspeed aperture, 1/30 or 1/50 with flash for great lightning effects.

I use the Rokinon 8mm, even after cropping with today's high MP cameras it's no problem.

I think the ONLY cheap fisheye is the $200 Zenitar 16mm 2.8, everything else is gonna be a lot more.

http://www.kenrockwell​.com/zenit/zenitar-16mm.htm

The Nikon 16mm 2.8 Al-s is pretty much the nest cheapest one, if you're lucky you can find a used one for $400.

http://www.kenrockwell​.com/nikon/1628.htm

then all you need is a Nikon to Canon adapter.

Rok 12mm FE

The Rokinon 8mm is EF-M, so for my Canon 6D I probably need an adaptor.
Isn't this a hassle and expensive?
So no autofocus on both 8 & 12mm's ?

CanonYouCan wrote in post #18036970
The Rokinon 8mm is EF-M, so for my Canon 6D I probably need an adaptor.
Isn't this a hassle and expensive?
So no autofocus on both 8 & 12mm's ?

Auto focus on a 12mm lens? Why? What on earth would you use it for?

Rokinon 12 2.8 is amazingly sharp. Strong performer.

I own the sigma 15mm I have no use for MF lenses and you can usually find the sigma for around $300 used.

I've heard that the Rokinon 12mm is sharper than the old Canon 15mm, and much wider. If I'm correct, it's the widest DSLR fisheye you can get without any vignetting. The Zenitar is cheap but I've heard it's pretty soft, especially at f2.8.

Scottboarding wrote in post #18037256
I've heard that the Rokinon 12mm is sharper than the old Canon 15mm, and much wider. If I'm correct, it's the widest DSLR fisheye you can get without any vignetting. The Zenitar is cheap but I've heard it's pretty soft, especially at f2.8.

I have samples showing the Rokinon sharper in most areas than the canon 8-15 and wider

I have the Sigma 15 and the Rokinon 12 FE lenses. I don't use AF on either. The Rok is the better of the two