K&F Concept Magnetic ND1000 77mm

The K&F Concept Magnetic ND1000 77mm is a fixed 10-stop neutral density filter for 77mm threads. It blocks enough light to allow slow shutter speeds in daylight, giving silky water in waterfalls, streaked clouds or empty streets without overexposing the frame. For travel, the filter and its ring add little bulk to a small kit, and the cap can stay on until you reach the location.

The A1 magnetic system removes the need to screw and unscrew the filter on every shot: the base ring is attached to the lens once, and the ND1000 sits on top by magnetic attraction. The kit includes the filter, the magnetic adapter ring and a protective cap, so a change takes seconds with no risk of cross-threading.

The glass is Japanese AGC optical glass, with nano coatings that reduce reflections and ghosting plus a hydrophobic, scratch-resistant surface that repels drops and dust. The CNC-machined aluminium frame is slim, around 5mm, to avoid vignetting on wide lenses, and it has a knurled grip for handling with gloves.

It is a practical option for landscape, long exposure and video in bright light, and for anyone rotating several filters from the same system: once the ring is mounted, the others go on and come off without touching the thread. At the manufacturer's store its reference price is 54.99 dollars.