The second generation Lucroit Pro holder is specially designed for large-barrel wide-angle lenses such as the Canon TS-E 17mm or the Nikon 14- 24 that otherwise lack a filter solution. This new style holder comes with tabs for attaching French flag and barn door style visors for controlling reflections and lens flare. The Lucroit holder uses donut adapters that fit over the lens to eliminate vignetting with these extreme wide angle lenses. Adapters are available for over 20 wide angle lenses, plus 77mm and 82mm threaded lenses. This Lucroit system uses 165mm filters. There are a number of wide angle lenses where it is not possible to fit standard filters or holders because the way the barrel of the lens is configured. The holder fits on the lens by a bayonet mount with a retaining rubber ring which holds it in place. It is designed to take 165mm standard filters with grads in 165x200. This means that, unlike other systems, it will not vignette on these wide angle lenses. As it is also available with adapters for standard 72-82mm lenses it now comprises a total high end system for the pro user.