When it applies
- Lens update required: SEL2470GM2 version 02; SEL200600G version 04 is documented here, without claiming it first enabled the feature.
- Use AF-C, Hi+, and Standard aperture drive. Sony’s example uses f/22 or wider, 1/250–1/80000 second, Large/Fine images or compressed RAW.
Where it stops
- A maximum is conditional; dim light, flash, or Focus Priority can lower speed.
- AF-S, DMF, and MF do not provide moving-subject AF tracking.
- No sustained-speed or hit-rate measurement was performed.
Sources
- a9 III: continuous shooting speed and AF/AE tracking — 120 images/second compatible-lens table; footnotes 1–7; settings example. Exact SEL200600G and SEL2470GM2 eligibility; update flag; conditional maximum and exposure rules. Read 2026-09-07.
- SEL200600G firmware 04: benefits and previous improvements — Benefits and Improvements; Previous Benefits and Improvements; File Info; Notice Before Updating. Version 04 retains a9 III high-speed and a7R V stabilization benefits. The listed card updater is not an installation route for either researched body. Read 2026-09-07.
- SEL2470GM2 firmware 02: benefits and version — Benefits and Improvements; File Info; Preparation; Notice Before Updating. Version 02 adds a9 III high-speed support. Card installation is restricted to the listed updater body; follow the linked computer route for other bodies. Read 2026-09-07.
Pairs checked under this rule
Only these pairs were checked. The rule does not extend to other gear on its own.
Researched from manufacturer documents by an AI agent and source-checked 2026-09-07. How the research works