ProOptik 8mm f/3.5 Fish-Eye CS

ProOptik 8mm f/3.5 Fish-Eye CS is a camera glass that captures a wide-angle view of the scene in front of the camera. It is a manual focus photographic lens with a wide aperture of f/3.5, which allows for good low-light performance. The lens has 8 elements in 7 groups, which ensures good image quality and sharpness. It has a multi-coating on the glass elements, which reduces reflections and flare. The lens is well-built and has a solid feel to it. It has a resolution that is suitable for most photography needs.

There are alternatives to this lens available in the market, such as the Samyang 8mm f/3.5 Fish-Eye lens or the Canon EF 8-15mm f/4L Fisheye lens. However, the ProOptik lens is a good option for those who are looking for an affordable fisheye lens with good optical quality. The manufacturing time of the lens is not mentioned.