This LMB 4x5 Clamp Adapter Basic 15mm LWS Set from ARRI includes the four most popular LMB 4x5 clamp adapters, screw-in reduction rings, and the 143mm adapter, which provides the possibility to attach the LMB 4x5 on 15mm lightweight support rods.

ARRI R2 138mm Filter Ring (143 / 114mm, Internal Focus Lens)

This ARRI R2 138mm Filter Ring fits into the back of ARRI matte boxes with a rear opening of 143mm, and is for internal focus lenses only. It enables mounting a 138mm round filter, such as a polarizer, onto your matte box and allowing for rotation of the filter. The R2 ring acts as an anti-refection donut and supports lenses with a front outer diameter of 114mm such as Master Primes, Ultra Prime, and LDS Ultra Primes.

The ring will allow you to use wide-angle video lenses as well, but only lenses with an internal focus design. It will accept optional R4 reduction rings, which allow you to use select lenses with a front outer diameter of less than 114mm.

• For matte boxes with rear 143mm opening. Compatible with the MMB-1 top-loading matte box
• Anti-reflection donut accepts 138mm round filters
• This R2 ring works with internal focus lenses only, as it does not accommodate the expansion and contraction of external focus lenses
• For lenses with a 114mm front outer diameter
• Accepts R4 reduction rings for working with lenses that have a smaller front outer diameter than 114mm

ARRI R4 Screw-In Reduction Ring for R2 138mm Filter Ring (114 to 95mm)

The 114 to 95mm ARRI R4 Screw-In Reduction Ring screws into your R2 138mm filter ring and reduces the rear opening from 114 to 95mm. This creates a light-tight seal when using a lens with a 95mm front, preventing light from leaking around the edge of your lens and potentially flaring the image. The reduction ring is threaded to accept available ARRI R5 reduction rings (not included), allowing you to use a variety of smaller diameter lenses with your setup.

ARRI R4 Screw-In Reduction Ring for R2 138mm Filter Ring (114 to 80mm)

The 114 to 80mm ARRI R4 Screw-In Reduction Ring screws into your R2 138mm filter ring and reduces the rear opening from 114 to 80mm. This creates a light-tight seal when using a lens with an 80mm front, preventing light from leaking around the edge of your lens and potentially flaring the image. The reduction ring is threaded to accept available ARRI R5 reduction rings (not included), allowing you to use a variety of smaller diameter lenses with your setup.

ARRI 15mm LWS Console for LMB 4x5 Clamp and Tilt/Flex Adapters

A screw-in standard 15 mm lightweight support console, compatible with both the LMB 4x5 143 mm clamp adapter and the LMB 4x5 tilt and flex adapter.