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 re-worked holder now comes with tabs for attached French Flag and barn door style visors (included in holder + adaptor kits) for controlling reflections and lens flare. Adapters for this holder system fit over the lens to eliminate vignetting with these extreme wide angle lenses. Lens specific adapters are available for 19 wide angle lenses, plus 8 sizes of threaded adapters. NOTE: Adaptor rings for the 165mm Lucroit Pro holder are NOT compatible with the 165mm Lucroit Pro L Holder
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.