Arri Clip On Matte Box LMB 4x5

The ARRI LMB 4x5 is one of the most widely used matte boxes in professional cinematography, found on everything from feature films and high-end television dramas to commercials, documentaries and corporate productions. Built around a robust 15mm rail-mounted system, it offers the flexibility and stability required for larger cinema camera builds while remaining quick and practical to use on set.

One of its biggest advantages is the integrated swing-away mechanism. Rather than removing the entire matte box when changing lenses, the front assembly simply swings clear of the camera, making lens swaps significantly quicker and reducing downtime during a shoot. For productions working through multiple focal lengths or regularly changing lenses, this can make a noticeable difference to the pace of the day.

Like any professional matte box, the LMB 4x5 is much more than a lens shade. It allows you to use professional cinema filters quickly and securely, with filter stages designed to accept industry-standard 4x5.65" filters. Neutral density filters, graduated NDs, polarisers, diffusion filters and a wide variety of creative filters can all be used to control exposure and shape the final look of your image without compromising optical quality.

The adjustable top flag helps prevent unwanted light from striking the front of the lens, reducing flare and maintaining contrast when shooting outdoors or under strong lighting. Additional side flags can also be fitted where greater light control is required.

The LMB 4x5 is designed primarily as a 15mm rail-mounted matte box, making it an excellent choice for larger camera builds with lens support systems. It can also be configured as a clip-on matte box for compatible lenses, but if you're looking for the lightest possible setup for compact camera work, the Arri LMB 25Arri Clip On Matte Box LMB 25 (40x34x26mm)The ARRI LMB 25 is a lightweight professional clip-on matte box used on productions ranging from independent short films to high-end television and feature films. Designed for fast lens changes and flexible filter use, it accepts both 4x4" and round PV filters, making it ideal for ND filters, graduated NDs, polarisers...  is often the better option thanks to its smaller size and lighter weight.

Robust, versatile and trusted throughout the industry, the ARRI LMB 4x5 remains a go-to matte box for productions that need professional filter control, fast lens changes and dependable performance on set.