Alec Eriksson

This may not help you, but perhaps someone else coming along and finding this question and wanting an alternative.... The Letus LTMB1 Matte Box comes with an anti-reflection tray out of the box. It's a bit different from usual matte boxes in that it uses a single deep top-loading tray that doesn't rotate and allows either 3 stacked 4x5.65 filters (set right on each other) or using the tray insert up to two filters at either a slight upward or downward angle. There's also a 138mm round rotary drop-in filter stage at the rear of the box for a polarizer, fader ND 138/4x5.65 combo system, or whatever else you can find in 138mm. I own the matte box as of last week but haven't had a chance to test out the angled insert, but the rest of the box is quite nice and considerably cheaper than ARRI or OConnor at a similar build quality. Maybe worth a look for you or others. Scope it out at mastercinemaseries.com