Circular fisheye lens for Sony E-mount APS-C with 180-degree field of view.
The Samyang 8mm f/3.5 Aspherical IF MC Fisheye CS II is a manual-focus circular fisheye lens designed for Sony E-mount APS-C cameras. On APS-C, this produces a full circular fisheye image within the frame, delivering the extreme 180-degree field of view that defines the fisheye perspective in a dramatic circular projection.
Optical quality is good for a fisheye lens with the aspherical element helping to control aberrations while the IF (Internal Focusing) design maintains consistent image quality across the focus range. The MC multi-coating reduces flare and ghosting, which is particularly important given the extreme field of view that frequently includes direct light sources.
Build quality is solid with a metal barrel and smooth focus ring. The CS II designation indicates the updated APS-C version with improved coatings. The bulbous front element is characteristic of fisheye designs and prevents the use of front-mounted filters, though some versions accept rear gel filter holders.
On the used market, the Samyang 8mm fisheye offers the most affordable route to fisheye photography for Sony APS-C shooters. For creative photographers, astrophotographers capturing all-sky images, and anyone wanting the distinctive fisheye distortion effect, it provides a dramatic creative tool at a budget-friendly price.