4x5.65/138mm Variable ND Kit - Revar Cine
4x5.65/138mm Variable ND Kit - Revar Cine

4x5.65/138mm Variable ND Kit

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Variable ND Kits

The Revar Cine Variable ND kit is the industry standard Variable ND solution for use in matte boxes, suiting those who like to work fast and who prefer variable ND control over single filter single stop control.

Our Variable ND uses two polarizer filters made of the highest quality optical glass and anti-reflective coatings to create a 2-8 stop effect. Featuring matched polarization foil allowing for minimal color shift to create the finest neutral density effect for your images.


Variable ND Kit A


The one that started it all, this kit takes up two of your 4x5.65 matte box trays. Using our rectangular 4x5.65 polarizer in your existing 4x5.65 tray, and our Rota Tray 138mm geared circular rotating polarizer that comes housed in a 4x5.65 width tray. The rectangular filter remains fixed in place, and by adjusting the 138mm filter with our built-in dual gear design (0.8 pitch follow focus standard), you are able to adjust between 2 and 8 stops of light loss.

When installing, place the Rota Tray filter at the back, and the rectangular filter in front, looking outwards.


Variable ND Kit B


Our latest solution for those working with smaller matte boxes like the Bright Tangerine Misfit Atom Pola +, or for those using matte boxes where the 4x5.65 stages are already used up with filtration/ tray mounted diopters, making use of the spare 138mm tray in the rear.

This kit can also be used with the new Bright Tangerine 2-stage ONE Tray as well as popular Arri LMB and MB with 4x5.65 and 138mm trays.

Optimized for lighter matte boxes, this kit is a perfect solution for Steadicam and gimbal work.

Placing the 138mm Circular Polarizer in the rear donut or 138mm rotating filter holder of the matte box, and the rectangular 4x5.65 filter in front, simply rotate the 138mm filter for a variable neutral density effect between 2-8 stops.


Made in the USA


Revar Cine filters are designed and manufactured in the USA from the highest quality optics, aircraft grade aluminum and poly materials to interface with the latest matte boxes on the market today.

What's in the box: Kit A

  • 4x5.65 width Rota-Tray with 138mm Circular Polarizer
  • 4x5.65 Linear Polarizer
  • Storage Pouches

What's in the box: Kit B

  • 138mm Circular Polarizer Pola+ 
  • 4x5.65 Linear Polarizer
  • Storage Pouches


  • 2 to 8 stops variable neutral density effect
  • High transmission broad band anti-reflective coated Schott B270 glass
  • Premium polarization foil
  • 1/4-20 threaded post for accessory mounting
  • Extra large 138mm glass for wide angle lens compatibility
  • Matched Polarizers for minimal color shift


  • 2-Stage 4x5.65 matte boxes:
    • Bright Tangerine KICK and VIV series
    • Wooden Camera
    • Chrosziel
    • Arri MB and LMB 4x5.65
    • OConnor O-Box
  • 1-Stage 4x5.65 + 138mm holder matte boxes:
    • Bright Tangerine Atom + Pola, Clash 138
    • Bright Tangerine ONE Tray,
    • Arri 4x5.65 LMB and MB with 138mm stage option, etc.
  • Revar Cine products are not compatible with Tilta matte boxes

Bits and Pieces

Already own a Rota-Tray or 4x5.65 Linear Polarizer? Looking for just bits and pieces? Click on the links below for more info on each component of the systems.

Trusted Quality

The Revar Cine optics have been purchased by 1000's of satisfied cinematographers and is trusted by the world's largest cinema equipment rental companies and dealers.