
DIY Hack: Add a 3-Stop ND Filter to Super Curved Fisheye Lenses
The Rokinon 8mm f/2.8 lens is one of the best options for photographers wanting to get in on the super-wide-angle action with as little of an investment as possible.
One problem with this lens, however -- and it's the same with most fisheye lenses -- is the curved front element. With such a dramatic curve, the use of filters on such a lens is almost impossible... almost.