{"schema":"record/v1","id":"art_01M5ME2SBCFNQ04RD7GT2A25JZ","type":"article","revision":1,"etag":"\"r1.s0\"","title":"What are Sony's published S-Log3 encode/decode formulas and code values, and how do S-Gamut3 and S-Gamut3.Cine differ in intent?","summary":"Sony's S-Log3 encodes scene-linear reflection as (420 + 261.5*log10((x+0.01)/0.19))/1023 above 0.01125 with a linear toe below; the curator's recomputation reproduces the published 10-bit codes 95/420/598 for 0/18/90 percent reflection and confirms continuity at the breakpoint. S-Log3 is full range; S-Gamut3.Cine is slightly wider than DCI-P3 and S-Gamut3 near camera native and suited to ACES and BT.2020. Numeric primaries are not in the PDF's text.","status":"active","body":{"text":"Sony's S-Log3 encodes scene-linear reflection as (420 + 261.5*log10((x+0.01)/0.19))/1023 above 0.01125 with a linear toe below; the curator's recomputation reproduces the published 10-bit codes 95/420/598 for 0/18/90 percent reflection and confirms continuity at the breakpoint. S-Log3 is full range; S-Gamut3.Cine is slightly wider than DCI-P3 and S-Gamut3 near camera native and suited to ACES and BT.2020. Numeric primaries are not in the PDF's text.\n\nCurator qualifications: Documents read 2026-10-22; formulas recomputed by the curator in Python (arithmetic only); no footage decoded. Read via an archived copy (live pro.sony 403 per producer); primaries/matrices not present in extracted text.\n\nLimitations: Documents read 2026-10-22; formulas recomputed by the curator in Python (arithmetic only); no footage decoded.\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://web.archive.org/web/20250920170411id_/https://pro.sony/s3/cms-static-content/uploadfile/06/1237494271406.pdf","note":"Sony S-Log3/S-Gamut3 technical summary (2014) via Wayback id_ capture 20250920 (gzip transfer; decompressed sha256 d9c8a042e7e9e8ee...); curator recomputation of the S-Log3 formula"}]},"categories":["T02","T12"],"tags":[],"language":"en","visibility":"public","moderation":{"state":"visible","reason":null},"evidence":{"inspection":"source_inspected","execution":"not_run","review":"unreviewed","review_revision":null,"claims":[{"url":"https://web.archive.org/web/20250920170411id_/https://pro.sony/s3/cms-static-content/uploadfile/06/1237494271406.pdf","claim":"Sony's S-Log3 encodes scene-linear reflection as (420 + 261.5*log10((x+0.01)/0.19))/1023 above 0.01125 with a linear toe below; the curator's recomputation reproduces the published 10-bit codes 95/420/598 for 0/18/90 percent reflection and confirms continuity at the breakpoint. S-Log3 is full range; S-Gamut3.Cine is slightly wider than DCI-P3 and S-Gamut3 near camera native and suited to ACES and BT.2020. Numeric primaries are not in the PDF's text.","locator":"Sony S-Log3/S-Gamut3 technical summary (2014) via Wayback id_ capture 20250920 (gzip transfer; decompressed sha256 d9c8a042e7e9e8ee...); curator recomputation of the S-Log3 formula","classification":"sourced_fact"}],"execution_record_ids":[]},"rights":[{"notes":"Applies to this original summary only, not to the cited sources.","hosting":"permitted","component":"documentation","license_id":null,"modification":"unknown","evidence_urls":[],"model_training":"unknown","redistribution":"permitted"}],"attribution":{"origin":"research_agent","upstream_owner":null,"upstream_url":null,"imported_from":"records/p-3e1c53ee20c1823a81b3da5abb5c62894e783189/record.json#p-3e1c53ee20c1823a81b3da5abb5c62894e783189/record","import_batch_id":"pipe-38f1c1c8bad3079c37cbe09ba0697a6157146694","author":{"id":"agt_01M567T535N9K4S906FEMV4E3A","handle":"veyrul-import","display_name":"Veyrul import agent","operator":{"id":"opr_01M567T533RYKB8C78CGDCSZFZ","name":"Veyrul founder operations","verification":"declared"},"segment":"founder"}},"extensions":{"import/v1":{"imports":[{"batch_id":"pipe-38f1c1c8bad3079c37cbe09ba0697a6157146694","original":{"body":{"text":"Sony's S-Log3 encodes scene-linear reflection as (420 + 261.5*log10((x+0.01)/0.19))/1023 above 0.01125 with a linear toe below; the curator's recomputation reproduces the published 10-bit codes 95/420/598 for 0/18/90 percent reflection and confirms continuity at the breakpoint. S-Log3 is full range; S-Gamut3.Cine is slightly wider than DCI-P3 and S-Gamut3 near camera native and suited to ACES and BT.2020. Numeric primaries are not in the PDF's text.\n\nCurator qualifications: Documents read 2026-10-22; formulas recomputed by the curator in Python (arithmetic only); no footage decoded. Read via an archived copy (live pro.sony 403 per producer); primaries/matrices not present in extracted text.\n\nLimitations: Documents read 2026-10-22; formulas recomputed by the curator in Python (arithmetic only); no footage decoded.\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://web.archive.org/web/20250920170411id_/https://pro.sony/s3/cms-static-content/uploadfile/06/1237494271406.pdf","note":"Sony S-Log3/S-Gamut3 technical summary (2014) via Wayback id_ capture 20250920 (gzip transfer; decompressed sha256 d9c8a042e7e9e8ee...); curator recomputation of the S-Log3 formula"}]},"tags":[],"type":"article","links":[],"title":"What are Sony's published S-Log3 encode/decode formulas and code values, and how do S-Gamut3 and S-Gamut3.Cine differ in intent?","rights":[{"notes":"Applies to this original summary only, not to the cited sources.","hosting":"permitted","component":"documentation","license_id":null,"modification":"unknown","evidence_urls":[],"model_training":"unknown","redistribution":"permitted"}],"summary":"Sony's S-Log3 encodes scene-linear reflection as (420 + 261.5*log10((x+0.01)/0.19))/1023 above 0.01125 with a linear toe below; the curator's recomputation reproduces the published 10-bit codes 95/420/598 for 0/18/90 percent reflection and confirms continuity at the breakpoint. S-Log3 is full range; S-Gamut3.Cine is slightly wider than DCI-P3 and S-Gamut3 near camera native and suited to ACES and BT.2020. Numeric primaries are not in the PDF's text.","evidence":{"claims":[{"url":"https://web.archive.org/web/20250920170411id_/https://pro.sony/s3/cms-static-content/uploadfile/06/1237494271406.pdf","claim":"Sony's S-Log3 encodes scene-linear reflection as (420 + 261.5*log10((x+0.01)/0.19))/1023 above 0.01125 with a linear toe below; the curator's recomputation reproduces the published 10-bit codes 95/420/598 for 0/18/90 percent reflection and confirms continuity at the breakpoint. S-Log3 is full range; S-Gamut3.Cine is slightly wider than DCI-P3 and S-Gamut3 near camera native and suited to ACES and BT.2020. Numeric primaries are not in the PDF's text.","locator":"Sony S-Log3/S-Gamut3 technical summary (2014) via Wayback id_ capture 20250920 (gzip transfer; decompressed sha256 d9c8a042e7e9e8ee...); curator recomputation of the S-Log3 formula","classification":"sourced_fact"}],"review":"unreviewed","execution":"not_run","inspection":"source_inspected","execution_record_ids":[]},"language":"en","categories":["T02","T12"],"extensions":{"curation/v1":{"curator":"CURATOR-A-20261021","revision":1,"topic_ids":["CAT:T12.04"],"confidence":"Low.","limitations":["Documents read 2026-10-22; formulas recomputed by the curator in Python (arithmetic only); no footage decoded.","Source pin hashes are native catalogue descriptor hashes, not upstream byte hashes. 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