is the rokinon 8mm the best you could get for a nikon without spending $500+?

just get a fisheye addon or use post production filter

save a few hundred, its not a full 180 but its good enough.

unless u wanna buy it for video aesthetic.

i use to have a nikkor fisheye 2.8 , not worth it

im budgeting for either a fisheye or a gopro lol

take the gopro

Nn

a Fisheye lense attachment isn't that useful in photography. The gopro would be much more useful. I dont think it uses as much of a fish eye as a 8mm small format lense.

But i guess it depends what you are trying to do.

go pro