Opteka 6.5mm HD Fisheye Lens for Nikon DSLR D300 D300s D600 D610 D700 D70 D70s. The Opteka 6.5mm f/3.5 Fisheye Lens is an excellent addition to any photographer’s collection, giving users the ability to expand their creativity and capture incredible scenes from a truly unique perspective. In the hands of an artist this lens can […]