Sony is preparing to announce the FE 100-400mm f/4.5 GM II lens, with leaked images and certification details pointing to a May 2026 release. This new GM telephoto zoom is expected to debut alongside the rumored Sony A7R VI, creating a flagship pairing for high-resolution stills and advanced video.
Rumored Specifications
- Zoom Design: Internal zoom mechanism for improved balance and dust resistance
- Length: Similar to the FE 200-600mm G
- Aperture: Constant f/4.5 across the zoom range
- Pricing: Comparable to the FE 50-150mm GM
- Release: Expected May 2026, possibly alongside the A7R VI
Rumored Lens Lineup
The FE 100-400mm f/4.5 GM II is one of four new lenses Sony is rumored to announce this year. See our Sony 2026 lens rumors coverage for the full roadmap:
- Sony FE 16-28mm f/2 GM — Ultra-wide zoom, rumored to be the fastest in its class.
- Sony FE 100-400mm f/4 GM — Successor to the 2017 GM OSS lens, with improved optics and faster AF.
- Sony FE 100-400mm G — Budget-friendly version with variable aperture and lighter build.
- Sony FE 200mm f/2 GM — Prototype spotted in testing, potentially rivaling Canon’s RF 200mm f/2 L IS USM.
Rumor Recap
The FE 100-400mm f/4.5 GM II represents Sony’s continued refinement of its GM lineup. With internal zoom, constant aperture, and pro-level optics, it is positioned as a premium telephoto option for wildlife, sports, and high-resolution hybrid shooters. Paired with the rumored A7R VI’s 67MP stacked sensor, this lens could deliver unprecedented reach and detail.
Explore Sony’s current lineup:
- Sony FE 100-400mm f/4.5-5.6 GM OSS
- Sony FE 200-600mm G
- Sony FE 50-150mm GM
- Sony A7R V
- Sony A7 IV
- Sony A7C II
Check Sony FE 100-400mm f/4.5 GM II PricesBuy Sony FE 100-400mm f/4.5 GM II
Tip: Compare the rumored FE 100-400mm f/4.5 GM II with the FE 100-400mm f/4.5-5.6 GM OSS and FE 200-600mm G to decide your upgrade path.
Summary
Sony FE 100-400mm f/4.5 GM II is rumored to launch in May 2026 with internal zoom, constant aperture, and pro-level optics. As part of Sony’s broader 2026 lens roadmap, this telephoto zoom could become a cornerstone for wildlife and sports shooters, especially when paired with the upcoming A7R VI.
For broader system context, see our Sony rumors archive, Sony E‑mount system guide, and best Sony E‑mount lenses roundup.
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