Fotodiox Pro 6.6x8.5" 漸層中性密度 .6（Grad-ND4，2 級）硬邊濾鏡（適用於 WonderPana 66 系統）

The hard-edge transition on this 2-stop grad is sharp enough for my beach horizons, and it slides smoothly into the WonderPana holder without any wobble. Definitely solves the blown-out sky problem I was having with wide-angle shots.

I was nervous about light leaks with a hard-edge grad, but this one sits snug in the holder with zero gap. The 2-stop drop is perfectly even across the transition, and the glass itself has a nice, solid weight to it.

The hard-edged transition is exactly what I needed for seascapes—no soft gradient bleed into the sky. It drops the highlights a full two stops without touching the foreground, so my exposures finally look natural straight out of camera.