Opteka OPT 6.5 mm F/3.5 Lens For Sony
The Opteka 6.5 mm f/3.5 lens is a fisheye lens that can be used with Sony digital cameras. A fisheye lens is a type of wide-angle lens sometimes also referred to as an ultra???wide-angle lens. When photographers use this type of lens, it results in photographs that have a distorted, bubble-type effect. This Opteka lens for Sony cameras has a focal length of 6.5 mm, and when it is used with cameras that have APS-C sensors it takes these ???fisheye??? type photos. This lens has an angle of view of 180 degrees. The Opteka 6.5 mm f/3.5 lens features an aspherical lens, a petal-type hood, a maximum aperture of 3.5, a minimum aperture of 22, and a minimum focus distance of 12 inches. The Opteka 6.5 mm f/3.5 lens is a manual-focus lens that features multi-layer lens coating designed to reduce ghosting and other issues. This Opteka lens for Sony is about four inches long and weighs about a pound, which makes it lightweight and portable.