Dorr 40.5mm 中性濃度8 DHGフィルター

Used it for a few waterfall shots and the 3-stop reduction was just right for a silky effect without washing out the sky. The ultra slim thread definitely helped — no visible vignetting even on my wide-angle lens.

Finally got this ND8 filter and the anti-reflective coating makes a huge difference in keeping colors accurate. Perfect for getting that silky water effect on my 40.5mm prime lens without any color cast.

The ultra-slim threading is a lifesaver on my wide-angle lens—no dark corners at all, even at 24mm. Exposure times dropped cleanly by three stops, so I finally got that silky waterfall shot without blowing out the sky.