Samyang's compact fisheye for mirrorless — 8mm f/2.8 with full 180° diagonal coverage on APS-C.
The Samyang 8mm f/2.8 UMC Fisheye II is an APS-C fisheye prime for Sony E-mount, producing a 180° diagonal fisheye field of view on APS-C sensors. Eleven elements in 8 groups with 2 aspherical elements. Six aperture blades. No filter thread — bulging front element with built-in petal hood. At approximately 250g (Sony E variant). 0.30m MFD.
Eleven elements in 8 groups (2 aspherical elements). Six aperture blades. No filter thread (bulging fisheye front element; built-in petal hood). Approximately 250g (weight varies slightly by mount variant). Minimum focus distance of 0.30m. Manual focus and manual aperture. f/2.8 maximum aperture. APS-C image circle. 180° diagonal FOV on APS-C. Sony E mount.
The Samyang 8mm f/2.8 Fisheye II is the mirrorless-native design versus the 8mm f/3.5 DSLR version: the shorter register distance for Sony E enables a more compact, lighter design. At f/2.8 versus the DSLR f/3.5 version, it provides more light transmission. Manual focus and aperture are standard for the Samyang fisheye range. The 180° diagonal fisheye on APS-C fills the sensor frame.
On the used market the Samyang 8mm f/2.8 UMC Fisheye II is affordable as a compact Sony E APS-C fisheye. Condition checks: manual focus helicoid smoothness, front element for marks. No filter thread. 180° APS-C diagonal fisheye. Compatible with Sony E-mount APS-C bodies; circular fisheye inscribed within frame on full-frame FE bodies.