High-Speed Dual Linear Motor AF: Powered by two linear focus motors, it delivers fast, quiet, and precise autofocus tracking capable of keeping up with continuous shooting speeds of up to 120 fps on compatible bodies like the Sony A9 III.

Built-In Optical SteadyShot (OSS): Features integrated optical image stabilization that works seamlessly with camera bodies (including Active Mode and coordinated stabilization) to reduce motion blur during handheld shooting.

Impressive Close-Up Magnification: Offers an impressive maximum magnification of 0.41x with a minimum focusing distance down to 0.86 m (2.83 ft) at the 400mm end, allowing for macro-like shots of small wildlife, insects, and details.

Teleconverter Compatibility: Fully compatible with Sony’s 1.4x and 2.0x teleconverters, expanding maximum reach up to 560mm or 800mm on full-frame bodies, and up to 1200mm equivalent on APS-C crop bodies.

Refined Optical Construction & Weather Sealing: Features 15 elements in 10 groups—including two ED (Extra-low Dispersion) glass elements and two aspherical lenses—a 9-blade circular aperture for soft bokeh, and a dust- and moisture-resistant design for outdoor shooting.