I’ve just updated and revised my Guide to Neutral Density Filters to take on board several changes:
1. The New Hoya ND x400 Filter
In the last revision to the Guide, I noted that Hoya had released the famous ND x400 (The Black Glass) in an 82mm thread size. This means you can now shoot with an ND x400 on, say, a Canon EF 16-35mm f2.8L II and one of the best landscape lenses on the planet, the Carl Zeiss Distagon 21mm f2.8, and others.
If Hoya have managed to pull this off with a filter the quality of its smaller thread sizes, eg 72mm and 77mm, then the new 82mm size will basically eat the market. This is simply because the bigger the diameter of the glass, the harder it gets to actually manufacture a workable extreme ND filter and the Lee Big Stopper (the only alternative for lenses…