<?xml version="1.0" encoding="UTF-8"?>
<!-- author= Wolfgang Ruppel-->
<!-- edit_date= 2018-02-17-->
<!-- comments to be removed before publication-->
<xs:schema targetNamespace="http://www.smpte-ra.org/ns/2067-50/2017/opl-color-scheme"
  xmlns:acesc="http://www.smpte-ra.org/ns/2067-50/2017/opl-color-scheme" 
  xmlns:oplcs="http://www.smpte-ra.org/schemas/2067-101/2014/color-schemes" 
  xmlns:xs="http://www.w3.org/2001/XMLSchema"
  elementFormDefault="qualified" attributeFormDefault="unqualified">
  <xs:import namespace="http://www.smpte-ra.org/schemas/2067-101/2014/color-schemes"/>
  <xs:simpleType name="HalfFloatType">
    <xs:restriction base="xs:float">
      <xs:minInclusive value="-65504.0"/>
      <xs:maxInclusive value="65504.0"/>
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name="HalfFloatTripletType">
    <xs:restriction>
      <xs:simpleType>
        <xs:list itemType="acesc:HalfFloatType"/>
      </xs:simpleType>
      <xs:length value="3"/>
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name="HalfFloatQuadrupletType">
    <xs:restriction>
      <xs:simpleType>
        <xs:list itemType="acesc:HalfFloatType"/>
      </xs:simpleType>
      <xs:length value="4"/>
    </xs:restriction>
  </xs:simpleType>
  <xs:complexType name="ACES-RGB-Float-16">
    <xs:simpleContent>
      <xs:restriction base="oplcs:ColorEncodingType">
        <xs:simpleType>
          <xs:restriction base="acesc:HalfFloatTripletType"/>
        </xs:simpleType>
      </xs:restriction>
    </xs:simpleContent>
  </xs:complexType>
  <xs:complexType name="ACES-RGBA-Float-16">
    <xs:simpleContent>
      <xs:restriction base="oplcs:ColorEncodingType">
        <xs:simpleType>
          <xs:restriction base="acesc:HalfFloatQuadrupletType"/>
        </xs:simpleType>
      </xs:restriction>
    </xs:simpleContent>
  </xs:complexType>
</xs:schema>