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• 16:49, 24 May 2026 ST talk contribs created page Sony FE 300 F2.8 GM OSS (Created page with "== Overview == The Sony **FE 300mm F2.8 GM OSS II** includes a Function Ring near the front of the lens. Sony officially documents this ring as supporting: * Power Focus * APS‑C / Full Frame toggle However, the lens also supports an **undocumented third mode**: (not mentioned in the [https://www.sony.com/electronics/support/res/manuals/5054/9160c8ce0087829b9805932cfbe6608c/50541710M.pdf FE300 F2.8 GM OSS Operating Guide]) * **Preset Focus** — allowing the user...")