So Harry asked me to write him a Neutral Density Gradient filter and whilst it certainly seemed doable I wasn’t especially inclined (!), so I attempted to post back that it was easy to do using a built-in Gradient generator, applying that to the layer above the problem clip, and then changing the Composite Mode … ought to do the job. Trouble was that Apple’s FCP discussions forum was playing hard to get that evening … there was nothing on the telly, I wasn’t tired enough for bed, I’d finished my book already … what the heck, a challenge is a challenge right?
And Andy’s Gradient Filter was born. Anyway, Harry was pleased, and I’m hoping you’ll find this FxFactory based recreation of it useful too.