Sony Electronics has unveiled the FE 100‑400mm F4.5 GM OSS, the latest addition to its flagship G Master™ lens series. Covering a versatile 100‑400mm focal range with a constant F4.5 aperture, this lens delivers the hallmark resolution, bokeh, and autofocus speed that define the G Master lineup. Designed for wildlife, birding, sports, and photojournalism, it offers handheld mobility with uncompromising optical performance.
Uncompromising G Master Optics
- Constant F4.5 aperture across the zoom range for consistent exposure.
- Advanced optical design: ED XA, XA, Super ED, and ED elements control chromatic and spherical aberrations.
- Nano AR Coating II reduces ghosting and flare in backlit conditions.
- 11‑blade circular aperture with precision spherical aberration control for signature G Master bokeh.
- Teleconverter compatibility: Supports 1.4x and 2x teleconverters for focal lengths up to 800mm (full‑frame) or 1200mm (APS‑C mode).
Autofocus That Keeps Pace
- Four XD Linear Motors and floating focus mechanism deliver AF speeds up to 3x faster than the FE 100‑400mm F4.5‑5.6 GM OSS.
- Improved subject tracking: Approximately 50% better tracking performance.
- Alpha 9 III compatibility: Fully supports continuous shooting up to 120 fps with AF/AE tracking.
Lightweight Build and Mobility
- Weight: Approx. 65 oz. (1,840g) with magnesium alloy barrel.
- Internal zoom design: Maintains constant length and stable center of gravity.
- Robust construction: Dust‑ and moisture‑resistant with fluorine front‑element coating.
Professional Control & Reliability
- Built‑in stabilization: Supports Active Mode and breathing compensation for video.
- Four focus hold buttons and dedicated function ring for personalized operation.
- Durable design: Engineered for demanding field conditions.
Price and Availability
The Sony FE 100‑400mm F4.5 GM OSS will be available in June 2026 for approximately $4,299.99 USD and $5,599.99 CAD.
Sony FE 100‑400mm at B&H Photo,
Sony FE 100‑400mm on Amazon,
Sony FE 100‑400mm at Adorama.
Other recommended Sony lenses:
Sony FE 70‑200mm F2.8 GM II,
Sony FE 50mm F1.2 GM,
Sony FE 16‑35mm F2.8 GM,
Sony FE 24‑70mm F2.8 GM II,
Sony FE 200‑600mm G OSS.
Summary
The Sony FE 100‑400mm F4.5 GM OSS sets a new benchmark for super‑telephoto zooms in the Alpha E‑mount system. With constant F4.5 aperture, dramatically faster autofocus, and G Master optical quality, it is built for professionals who demand speed, reach, and reliability in the field. Whether tracking wildlife or covering sports, this lens expands creative possibilities with uncompromising performance.
For broader context, see our Sony E-mount system guide and best Sony E-mount lenses roundup.
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