These brass-framed neutral density filters can slow down shutter speeds for video motion blur, wide-open aperture shooting and multi-second exposure times.

Samsung added a digital ND Filter feature to its Expert RAW app, which offers professional-grade camera features on supported Galaxy devices, with the One UI 6.0 update last year.

The picture on the left was shot without any filter and is noticeably sharper than the image on the right taken with the K&F Concept Nano-X Variable ND Filter ND2-400 set to its minimum strength.