Aurora Aperture unveils new rear mount filter system for Canon, Nikon, Sigma & Sony ultra wide-angle lenses

Aurora Aperture unveils new rear mount filter system for Canon, Nikon, Sigma & Sony ultra wide-angle lenses
Aurora Aperture Inc. has announced a nex…
Source: dpreview
Aurora Aperture unveils new rear mount filter system for Canon, Nikon, Sigma & Sony ultra wide-angle lenses