NiSi, Cinema C5 Matte Box Cinema Kit - 95mm Clamp-On, 4x4 & 4x5.65 Filter Slots - Rotating CPL, 1-5 Stop VND, 4-Stop ND, 1/8 Black Mist - Includes (67/72/77/82mm) Adapters, Filter Trays & Travel Pouch

The variable ND works well and the diffusion is perfect for my needs. The matte box is very well made - strong, light, easy to get on/off, and works very smoothly. The overall system - case, box, filters, adapter rings - is very well executed. Does its job and stays out of my way. I use it more than expected.

Todo excelente, sólo que me habría gustado que el filtro mist hubiese sido de 1/4 o 1/2- pero lo demás todo super!

As a videographer for 6+ years, I've used many ND filters. Every variable ND I've ever used has had quite a noticeable color shift, and thus I've always avoided using them and stuck with fixed NDs . Once I heard about Nisi's True Color Variable ND system that supposedly has no color shift, I picked it up immediately. These test images were shot on the Sony FX3 with same ISO, aperture and white balance settings. Only the shutter speed was changed to match the exposure of the shots. As far as color, you can see from the test images I captured and the included color scopes, there is definitely a slight color shift in the warmer direction with the VND on. It is subtle, but I would not consider it "true" color as Nisi claims. The ND 1.2 filter does not appear to have any color cast and the waveforms line up almost exactly. Using them both together gives the same result as just using the VND. As far as sharpness, there is no significant loss in sharpness. I do notice a very slight loss in detail if I zoom into the images, but it is completely negligible in real world use. Final verdict: Great matte box. Very good build quality. Has that premium feel to it for sure. Being able to use both 4x4 and 4x5.56 filters with it is a huge plus. Definitely an upgrade over the Tilta Mirage which I returned because of the heavy color shift and no compatibility with 4x4 filters. Although this one still has some shift, it's probably the least I've seen with a VND, and is easily adjusted for in post (adding +6 to the color temperature in Premiere seemed to fix it close enough). The slight difference is worth not having to switch out filters constantly, so I'll most likely end up keeping this. Update: the screw to hold the 4 x 5.65 filter does not tighten enough to hold the filter. My filter fell out on the first use, and now its cracked on the side. I had to replace the screw with a longer screw.

The filter tray slides out even when tightened all the way down. The flag does not hold itself up when tightened all the way and creeps down into the frame. Really disappointing product. Would not recommend