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=== [[Linear function (calculus)|Linear]] ===
A '''Linear tranfer function''' describe is a [[Transfer function|tranfer function]] based on a [[Linear function (calculus)|linear function]]. Some EOTF and OETF have an initial linear portion folowwed by a non-linear part (i.e. sRGB, Rec.709<ref name=":1" /> and Rec.1886<ref name=":2" />).
=== [[Gamma correction|Gamma]] ===
==== Rec.601, Rec.709 and Rec.2020 ====
The [[ITU-R]] recommendations [[Rec. 601|BT.601]], [[Rec. 709|BT.709]] and [[Rec. 2020|BT.2020]] describe the reference OETF of respectively [[Standard-definition television|SD-TV]], [[High-definition television|HD-TV]] and [[Ultra-high-definition television|UHD-TV]]. They are identical OETF based on a gamma curve and used for [[Standard-dynamic-range video|SDR-TV]].<ref>{{Cite web|title=BT.601 : Studio encoding parameters of digital television for standard 4:3 and wide screen 16:9 aspect ratios|url=https://www.itu.int/rec/R-REC-BT.601/en|access-date=2021-02-02|website=www.itu.int}}</ref><ref name=":1">{{Cite web|title=BT.709 : Parameter values for the HDTV standards for production and international programme exchange|url=https://www.itu.int/rec/R-REC-BT.709/en|access-date=2021-02-02|website=www.itu.int}}</ref><ref>{{Cite web|title=BT.2020 : Parameter values for ultra-high definition television systems for production and international programme exchange|url=https://www.itu.int/rec/R-REC-BT.2020/en|access-date=2021-02-02|website=www.itu.int}}</ref>
==== Rec.1886 ====
The '''ITU-R Recommendation BT.1886''' describe the reference EOTF of [[Standard-dynamic-range video|SDR-TV]].<ref name=":2">{{Cite web|title=BT.1886 : Reference electro-optical transfer function for flat panel displays used in HDTV studio production|url=https://www.itu.int/rec/R-REC-BT.1886/en|access-date=2021-02-02|website=www.itu.int}}</ref>
==== sRGB ====
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