Samyang SY12M-N 12mm f/2.8

Sharp, affordable, and gloriously weird. The Samyang 12mm f/2.8 is the full-frame fisheye your Nikon has been waiting for, just don't drop it on that protruding front element.

The sharpness here is the real surprise. Samyang has a reputation for hit-or-miss quality control, but this 12mm delivers edge-to-edge sharpness that owners consistently rave about. The 12 elements in 8 groups, including 3 ED and 2 aspherical elements, do serious work. Color and contrast are excellent too, thanks to the Nano Coating System. The f/2.8 max aperture is genuinely useful for low light and lets you get a bit of subject separation, though bokeh is not this lens's strong suit. It's a fisheye, so creamy background blur was never the point. Macro performance lands well above average, which is a nice bonus for close-up creative shots.

The Sony FE Distagon T-Star 35mm f/1.4 ZA is a completely different animal, a premium autofocus prime that costs way more and doesn't give you the fisheye look at all. The Sigma Contemporary 18-50mm f/2.8 DC DN is a crop-sensor zoom, so it's not even playing the same game on full-frame. The Tamron Di III VC 28-300mm is a superzoom for convenience, not creative distortion. Honestly, none of these are direct competitors. If you want a full-frame fisheye for Nikon F mount at this price, there's basically nothing else that does what this Samyang does. The Nikon NIKKOR 2178 is the closest in spirit, but it's a different focal length and costs more.

At USD 329 to 349 in the US, this lens is a steal for full-frame fisheye coverage. Canadian buyers should shop around, prices swing from CAD 457 to CAD 562 across vendors, so check both listings before you commit. The cheaper CAD option is the obvious pick. For what you're getting optically, this undercuts name-brand fisheyes by a wide margin. It's not the most polished lens physically, but the image quality per dollar is hard to beat.

The Samyang 12mm f/2.8 fisheye is a niche lens that absolutely nails its niche. If you want that full 180-degree distorted look on a full-frame Nikon body without spending a fortune, this is the one to get. It's manual focus only, which scares some people off, but for the kind of work this lens excels at, autofocus barely matters. Owners are practically gushing about it, and our data backs that up with user sentiment sitting near the top of the charts.

If you want autofocus, weather sealing, or a lens you can toss in a bag without worrying, this isn't it. The protruding front element demands careful handling, and the manual focus will frustrate anyone shooting fast-moving subjects. Wildlife and sports shooters should look elsewhere, this lens scores near the bottom for that kind of work. If you need a general-purpose wide angle rather than a fisheye, grab a standard 14mm or 16mm prime instead.

Buy it. If you shoot full-frame Nikon and want the classic fisheye look for virtual tours, creative landscapes, or just messing around with wild perspectives, this Samyang is the obvious choice. The manual focus is a non-issue for the kind of shooting this lens is made for. Owners give it a perfect 5 out of 5 across 23 reviews, and our sentiment analysis puts it in the top tier. The only real caveat is that front element, get a good case and treat it gently.