Arri has posted a video highlighting the features of the Arri Studio Matte Box SMB-1:
A studio matte box for filter sizes up to 6.6″ x 6.6″, the SMB-1 is designed to be used with bigger wide-angle prime lenses and also with zooms.
The SMB-1 Tilt has an integrated tilt module that counteracts image artifacts linked to filter reflections by allowing the matte box assembly to be quickly and easily tilted, without any need for additional ,accessories. A flexible, rear-extending control shaft is available for the module, making it simple for the camera operator to adjust the tilt angle.
Filter stages can be stacked together as single or dual filter stage modules, maccommodating everything from wide-angle coverage to multi-filter situations while minimizing the number of components.
Filters are fully rotatable, the 2-filter stage accepts one geared filter frame, and all filter mstages are fitted with independent “tray catchers.” The matte box can be optimized for anamorphic filming by means of a unique 2:1 ratio sunshade, side flags and matte set.
The standard 4:3 ratio sunshade covers the full ALEXA sensor and permits repositioning in post. Top, bottom and side mflags allow precise positioning thanks toadvanced adjusters, and the top flag has folding side flaps to reduce overall width if required.
An accessory mount can be fitted directly onto the matte box body, offering surfaces for French flag arms and incorporating a 3/8-16″ sliding mount that is ideal for ultrasonic sensors such as the ARRI UDM-1. When used with the ALEXA, the SMB-1 covers the Master Prime 12 mm with a 2-filter-stage, the Ultra Prime 10 mm with a 1-filter stage, and the new ARRI UWZ 9.5-18 Ultra Wide Zoom with a 1-filter stage.