Magnetic Variable ND Filter and 67mm Threaded Ring - 4581 | ND2-ND32 (1-5 Stops), Waterproof, Scratch-resistant; Magnetic + Threaded Design, Neutral Density Control

No weird artifacts, high quality and does exactly what it's supposed to do.

All items I have purchased from SMALLRIG are of the highest quality.

I already own a 95mm circular magnetic filter system from Kase that I use with my Canon RF 15-35 lens (82mm filter thread), however that lens is rarely on the front of my camera these days and I generally run & gun using my 35mm prime, mostly shooting stills but with a little mix of family video thrown in too. Having previously bought and been very happy with SMALLRIG products, mainly cold shoe mounts, brackets and grips, I jumped at the opportunity to receive this 67mm variable ND filter for review, although I had to order a separate step-up ring from e-bay to use it with my smallest threaded lens, which just happened to be my favoured 35mm. The magnetic mount that takes the filter is very slimline (as is the filter itself) and it screwed onto my step-up ring very smoothly, although the step-up ring itself was branded and not a ‘cheap’ one. The ND filter then just attaches magnetically, however unlike my Kase system, there are 5 additional little ‘lugs’ that the filter naturally rests into if you rotate it slightly on the magnetic mount. It’s as if the filter and mount have a little handshake and I really liked it as I was never in any doubt when the filter was properly attached to the mount. In use the filter rotation has a very short ‘throw’ which is great and there’s a stopper at ND2 and then again at ND32 so you always know exactly where you are between the two and can't go beyond the min & max settings. In the uploaded video clip, I set ISO to AUTO and rotated the filter (excuse the shaky footage) back and forth between ND2 and ND32 and waited for camera to adjust exposure. There was no banding or any other dark areas when at ND32 that you sometimes see with poorer performing filters and looking at the RAW 4k footage on Desktop I couldn’t see any difference when at ND2 or ND32. Although I would never normally use a variable ND for stills, I took a picture of the clouds in bright sunlight at ND32 and again I couldn’t see any dark areas or crosses on the image so all was good (I've screenshot LRC so you can see camera settings). In short, there's nothing I disliked about this variable ND Filter or it’s magnetic mount, that actually had benefits over my much more expensive Kase system in the shape of the ‘lugs’. SMALLRIG is a brand I’m already familiar with and I’ve never had a problem with anything I’ve ever received from them with this variable ND filter being no exception, therefore I’m more than happy to recommend it.

Excellent product from smallrig as normal, great quality and simple to use.

Needs a design tweak to be ideal.

I'm in two minds about these filters. They didn't quite go to as extreme ends as what I got with other ND filters that I've purchased; however, the fact that it snaps on with the magnet is a really cool feature. I'd say if you're deeply embedded with SmallRig and you use the magnetic feature, get these. If not, I'd go get some other cheaper ones.

This SmallRig magnetic variable ND2-ND32 lens filter offers 5 stops of exposure brightness, allowing for precise control over shots. It has a magnetic design with enhanced attraction for secure installation and removal. The filter is compatible with SmallRig phone cages for iPhone and Samsung S24 Ultra 4601, and comes with a 67mm threaded filter ring. The filter features a rotating hard stop design at ND2 and ND32, eliminating the "X" cross dark spot issue when shooting with wide-angle lenses. It is made of premium AGC optical glass and true colour film, with a waterproof, stain-resistant, oil-proof, and scratch-resistant coating. The aluminium alloy frame is durable and well-built, with a large diameter design that avoids vignetting under ultra-wide angle lenses. Overall I would say this filter is versatile, convenient, and easy to use.

Lo uso con el iphone 16 pro con la app de blackmagic y es indispensable en días de sol para aprovechar los otros parámetros. No deja marcas raras ni distorsiona. Muy cómodo de usar y el imán encaja bien y rápido.

Funciona exactamente como está descrito. Es práctico y tiene buena calidad.

Au top !

Il filtro funziona perfettamente su iPhone 17 pro, non vignetta e non presenta il fenomeno della X nemmeno con il 13 mm. Cinque stop possono bastare in quasi tutte le situazioni anche se con luce molto forte si potrebbe fare fatica a 1/50 dí secondo di shutter

Outstanding!