The Polaroid Wide Angle Filter Holder positions your choice of filter very close to the lens, so close that wide angle lenses have a clear field of view. And of course, there will be no viewing obstruction for normal and telephoto lenses either. The holder is made out of high impact materials and provides a snug fit for the filter. A filter holder adapter ring with a thread size matching that of your lens must be used in conjunction with the holder. Polaroid adapters are sold separately. Note this is a Polaroid branded item. Note this holder accommodates a single, 3” square filter.