The H&Y Revoring Variable ND+CPL is a variable neutral density filter and a polarising filter with a novel type of mount. It’s essentially the H&Y Revoring with a couple of filters built-in.
H&Y has just launched a Kickstarter campaign to fund both the Revoring and the Revoring Variable ND+CPL. Their anticipated delivery date is November 2020, but we’ve been able to test an early sample.
The smart thing about the Revoring Variable ND+CPL is that instead of screwing onto a lens filter thread, it grips it with a variable-sized mount. That means it can fit a range of lenses.
H&Y makes the Revoring Variable ND+CPL in three sizes:
If your lens has a filter thread of 72mm, you need the 67-82mm H&Y Revoring Variable ND+CPL.