What fisheye to get?

Im in the market for a full frame fisheye. I am having a hard time picking between the sigma and the nikon. Anyone have any suggestions?
Thanks!

Love my Sigma 15mm. Nikon is supposedly the bomb as well, but as I did with my macro I went with Sigma and have zero regrets.

FX or DX?

FX: Siggy 15mm DX: Siggy 10mm.

there is only 1 choice....

Fisheye-Nikkor 6mm f/2.8
Clicky Clicky

Oh and then let me have a go with it! Puleeeeeese!

kevy73 said:

there is only 1 choice....

Fisheye-Nikkor 6mm f/2.8

Click to expand...

It's the only fisheye I'd own.

Since the depth of field on the fisheye is so deep, autofocus is almost not necessary. I have a 16mm f/2.8 AIS and I love it. It can be had for about $400 used on Ebay. Some of my favorite images have been taken with it!

Its for my d700, I would really like something auto focus because sometimes my wife gets the urge to shoot and any time she is on board it makes it easier for me to buy stuff!

In The Raw said:

Its for my d700, I would really like something auto focus because sometimes my wife gets the urge to shoot and any time she is on board it makes it easier for me to buy stuff!

Click to expand...

For the 16mm f/2.8 AIS, set at the hyperfocal distance for f/5.6, it is in focus from 1.5 feet to infinity. Why do you need autofocus?

Heck, for that matter you could set it at that hyperfocal distance and lock it there with some electrical tape and never ever have to worry about focusing it.