The Sony LA-EA5 adapter allows for mounting A-mount lenses on Sony E-mount cameras. This A-mount to E-mount adapter features a cylindrical design with a diameter matching the A-mount: when mounted on a compact E-mount body, it does not protrude from the base, ensuring a steady grip even with a vertical handle.

It houses an AF drive unit and an aperture drive unit. This allows for the use of SSM and SAM lenses, as well as lenses without an internal motor such as the Sonnar T* 135 mm F1.8 ZA and Planar T* 85 mm F1.4 ZA, with focal-plane phase-detection autofocus.

With the latest E-mount camera bodies, features such as Real-time Eye AF for humans and animals and Real-time Tracking are available, along with AF/AE tracking up to 11 fps in continuous shooting. Available functions depend on the specific camera body and lens combination, and some cameras require a software update: it is recommended to consult the Sony compatibility list before purchase.

Designed as an A-mount lens adapter for those who already own lenses from this system and work with a Sony mirrorless camera, it measures 66.0 x 31.7 mm (diameter by length) and weighs approximately 88 g. Updated Sony LA-EA5 price and availability are listed on the Martcom product page.