The NiSi 77mm Filter Adapter Ring is specially designed for using the S5 system for Sigma 14-24mm f/2.8 DG Art Series (Canon and Nikon Mount) on lenses which have 77mm filter thread. This new adapter allows you to use the S5 filter system for Sigma 14-24mm f/2.8 DG Art Series (Canon and Nikon Mount) with the original lenses it was designed for in addition to other lenses you may also own of 77mm diameter. The adaptor ring features No Vignetting.
