AstrHori has announced its new 6mm F2.8 full-frame circular fisheye lens that features the same focal length, aperture, and field of view as the legendary Nikon 6mm F2.8.
This manual focus lens is available in Sony E, Canon RF, Nikon Z, and Leica L mounts.
Key features
- Circular Fisheye — Strong distortion with a unique visual style, creating dramatic impact.
- Full-Frame 6mm Ultra-Wide — 220° field of view, capturing the widest possible scenes.
- F2.8 Large Aperture — Excellent for low-light shooting and breathtaking astrophotography.
- 0.08m Minimum Focus Distance — Get extremely close for striking and exaggerated fisheye shots.
- Compact & Lightweight — Easy to carry, weighing just 340g.

The optical construction of the lens consists of 10 elements in 8 groups, and it has 8 aperture blades.

The minimum focusing distance is 8 cm, and it weighs in at just 340g / 11.99 oz.
This is a fairly niche lens, but as its affordable, it could be an interesting one to have in your kit bag for specialty shots.
Pricing & Availability
The AstrHori 6mm F2.8 full-frame circular fisheye lens is available to purchase for $299 USD.