Sony FE 100-400mm F4.5-5.6 GM OSS (SEL100400GM)
firmware v06
Sony · Released May 19, 2026 · First seen Jul 4, 2026
v06 is the latest firmware for the Sony FE 100-400mm F4.5-5.6 GM OSS (SEL100400GM), released May 19, 2026.
What's in this update
Release notes not published by vendor — see official page. Check Sony's website for the full details of what this update changes.
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