SmallRig 4 x 5.65" ND 1.2 (4 Stop) Filter, Square Neutral Density Filter, 4mm Thick Multi-Layer Coated B270 Optical Glass, 6.25% Light Transmittance for Matte Box Outdoor Filming – 3589

Scratch, resistant good air quality

I have used variable ND filters a lot before and they have all had a slight colour shift, often towards green.I was hoping that by investing in a more expensive fixed glass ND filter that it would be better but it really isn't. The colour shift is really quite bad especially if you shoot stills through it. It does its job in reducing the light but there are cheaper ways of doing it. This is probably not worth the extra investment sadly.

It's a robust yoke! As much as it pains me to admit it, I let this fall out of the slider compartment on the matte box. My reflex kicked in and i stuck my foot out to catch it, making the fall worse. There's not a mark on this after that incident (I thoroughly inspected it).And the actual use is fantastic. Perfect light blocking, no dark spots or uneven coverage, and no colour tint. Really good product that I highly recommend.