Precision-milled trapezoidal interface between ARRI cameras and lenses enabling fast, play-free lens swaps without realignment.
Technical Details
The ARRI Dovetail plate measures 200mm in length as standard, with variants from 150mm to 381mm for different camera sizes. The system operates with a clamping force of up to 2000N and safely supports loads up to 50kg. The plate features 1/4"-20 and 3/8"-16 threaded holes on a 12.7mm grid, as well as anti-twist pins with a 2.5mm diameter. The locking mechanism uses a spring-loaded safety tab that prevents accidental release.
History & Development
ARRI introduced the Dovetail system in 1982 with the Arriflex 535 to replace time-consuming screw mounting. The breakthrough came in 1993 with its standardization for the ALEXA series, establishing the system industry-wide. In 2018, ARRI expanded the system with LPL mount integration and in 2021 developed the TRINITY-compatible version for gimbal applications.
Practical Use in Film
In "1917" (2019), the Dovetail system enabled lightning-fast camera changes between Steadicam, drone, and tracks during the one-shot sequences. Cinematographer Roger Deakins utilized the precise reproducibility for complex greenscreen setups in "Blade Runner 2049." The system reduces changeover times from 5-10 minutes to under 30 seconds, eliminates calibration errors, and ensures pixel-accurate repeatability for multiple takes.
Comparison & Alternatives
In contrast to Manfrotto's 501PL system (sliding plate) or the Mitchell standard, ARRI's Dovetail offers higher stability and faster operation. RED's DSMC system uses proprietary mounting pins, while Sony's FS series relies on standard screw connections. Blackmagic's URSA uses its own quick-release system but does not achieve the precision of the ARRI standard. For broadcast cameras, the ENG wedge system with 75mm balls still dominates.