Sony FE 100-400mm F4.5 GM OSS — Pre-order

Key specifications

• 100–400mm full-frame E-mount · constant F4.5 aperture across the zoom range
• G Master optics: ED XA, XA, Super ED and ED elements
• 4× XD linear AF motors — up to 3× faster AF vs previous 100-400 GM
• Internal zoom design — fixed length, stable balance while panning
• Optical SteadyShot (OSS) with Active Mode on compatible bodies
• 11-blade circular aperture · 95mm front filter + drop-in slot
• Teleconverter ready: 1.4× (140–560mm f/6.3) or 2× (200–800mm f/9)
• Approx. 1,840 g — built for professional field use

Upgrade from Sony FE 100-400mm F4.5-5.6 GM OSS (2017)

• Constant F4.5 vs variable F4.5-5.6 — no exposure shift when zooming; ~2/3 stop more light at 400mm
• Up to 3× faster autofocus and ~50% improved subject tracking (Sony vs 2017 GM)
• Internal zoom barrel vs extending design — better balance for wildlife and sports panning
• New optical formula aimed at edge-to-edge sharpness at all focal lengths
• Full α9 III compatibility — up to 120 fps with AF/AE tracking

Who is this lens for?

Built for wildlife, birding, sports, and photojournalism — anyone who needs telephoto reach with pro AF speed. Ideal if you own the older 100-400 GM and wanted constant aperture, or if you carry a 70-200 plus a long prime and want one lens to cover 100–400mm without sacrificing light at the long end.