Ok,
I got a sweet deal on a used Sea and Sea setup for my D80. Here's the "problem"...
I own a Sigma 10-20mm f4-5.6 EX lens and the Sea and Sea package comes with the NX fisheye dome port.
The two are not compatable. I can either pickup a Nikon 10.5mm f2.8 fisheye and sell the Sigma,
or sell the fisheye dome and pick up the NX compact dome. Either way is comparable money wise.
Nikon pros-
faster
fisheye look- can be corrected post production (if I wanted to)
Sigma pro-
zoom
no post production barrel distortion fix
Thanks for your opinion!