Canadian company Metabones has introduced TruePDAF Technology, a firmware-level update for its Speed Booster Mark II and Smart Adapter Mark II products — four adapters in total, all designed to mount Canon EF-mount lenses on Micro Four Thirds cameras. The update was made available in June 2026 and applies exclusively to the Mark II generation of these adapters, which include improved hardware compared to the original Mark I versions.

The core function of TruePDAF is to pass additional lens metadata from the adapted EF lens to the host camera, matching the type of data that native Micro Four Thirds lenses transmit. When a supported lens is connected, the adapter’s LED indicator glows pink rather than the standard white, signaling that enhanced communication is active. With this data available, the camera’s phase-detect autofocus system can operate more effectively in conditions that typically degrade AF performance: low light, low-contrast subjects, autofocus points near the frame edges, and subjects at or near the minimum focusing distance of the lens. Metabones also states that in-body image stabilization improves under TruePDAF, particularly at macro focusing distances.

Compatibility with the full set of benefits is currently limited. Metabones specifies that near-native autofocus performance requires either the Panasonic GH7 or the Panasonic G9 II. On other Micro Four Thirds cameras, the update still provides some improvement — Metabones notes that Olympus E-M1 and OM-1 series bodies show gains, though less consistent ones — but the company states clearly that other cameras will not reach near-native levels. If a lens is not on the supported list, performance is unchanged from the Mark I adapters.

The supported lens list covers more than 100 EF lenses, including APS-C and full-frame primes and zooms across the range from entry-level to Canon’s L Series professional-grade glass, as well as third-party EF lenses from Samyang, Sigma, and Tamron.