1 diff --git a/share/cmake/modules/FindExtPackages.cmake b/share/cmake/modules/FindExtPackages.cmake
2 index c98e0af3..5f685935 100644
3 --- a/share/cmake/modules/FindExtPackages.cmake
4 +++ b/share/cmake/modules/FindExtPackages.cmake
5 @@ -34,7 +34,7 @@ find_package(yaml-cpp 0.6.3 REQUIRED)
7 # Half (OpenEXR/IlmBase)
8 # https://github.com/openexr/openexr
9 -find_package(Half 2.4.0 REQUIRED)
10 +find_package(Imath 3.0 REQUIRED)
13 # https://github.com/imageworks/pystring
14 diff --git a/src/OpenColorIO/BitDepthUtils.h b/src/OpenColorIO/BitDepthUtils.h
15 index a8b3cbd9..bb0163bf 100644
16 --- a/src/OpenColorIO/BitDepthUtils.h
17 +++ b/src/OpenColorIO/BitDepthUtils.h
20 #include <OpenColorIO/OpenColorIO.h>
22 -#include "OpenEXR/half.h"
23 +#include "Imath/half.h"
26 namespace OCIO_NAMESPACE
27 diff --git a/src/OpenColorIO/CMakeLists.txt b/src/OpenColorIO/CMakeLists.txt
28 index 2ce801e6..824f8a98 100755
29 --- a/src/OpenColorIO/CMakeLists.txt
30 +++ b/src/OpenColorIO/CMakeLists.txt
31 @@ -207,7 +207,7 @@ target_link_libraries(OpenColorIO
40 diff --git a/src/OpenColorIO/MathUtils.h b/src/OpenColorIO/MathUtils.h
41 index 309c6244..0873d490 100644
42 --- a/src/OpenColorIO/MathUtils.h
43 +++ b/src/OpenColorIO/MathUtils.h
46 #include <OpenColorIO/OpenColorIO.h>
48 -#include "OpenEXR/half.h"
49 +#include "Imath/half.h"
51 namespace OCIO_NAMESPACE
53 diff --git a/src/OpenColorIO/ops/range/RangeOp.cpp b/src/OpenColorIO/ops/range/RangeOp.cpp
54 index 9ec863e2..444dac75 100644
55 --- a/src/OpenColorIO/ops/range/RangeOp.cpp
56 +++ b/src/OpenColorIO/ops/range/RangeOp.cpp
58 #include <OpenColorIO/OpenColorIO.h>
60 #include "GpuShaderUtils.h"
61 -#include "OpenEXR/half.h"
62 +#include "Imath/half.h"
63 #include "HashUtils.h"
64 #include "MathUtils.h"
65 #include "ops/lut1d/Lut1DOpData.h"
66 diff --git a/src/OpenColorIO/transforms/builtins/ACES.cpp b/src/OpenColorIO/transforms/builtins/ACES.cpp
67 index 20968c0d..9ee2ac27 100644
68 --- a/src/OpenColorIO/transforms/builtins/ACES.cpp
69 +++ b/src/OpenColorIO/transforms/builtins/ACES.cpp
72 #include <OpenColorIO/OpenColorIO.h>
74 -#include "OpenEXR/half.h"
75 +#include "Imath/half.h"
76 #include "ops/fixedfunction/FixedFunctionOp.h"
77 #include "ops/gradingrgbcurve/GradingRGBCurveOp.h"
78 #include "ops/log/LogOp.h"
79 diff --git a/src/OpenColorIO/transforms/builtins/OpHelpers.cpp b/src/OpenColorIO/transforms/builtins/OpHelpers.cpp
80 index 04b8fbd4..288ca566 100644
81 --- a/src/OpenColorIO/transforms/builtins/OpHelpers.cpp
82 +++ b/src/OpenColorIO/transforms/builtins/OpHelpers.cpp
85 #include <OpenColorIO/OpenColorIO.h>
87 -#include "OpenEXR/half.h"
88 +#include "Imath/half.h"
89 #include "ops/lut1d/Lut1DOp.h"
90 #include "transforms/builtins/OpHelpers.h"
92 diff --git a/src/apps/ocioconvert/CMakeLists.txt b/src/apps/ocioconvert/CMakeLists.txt
93 index 68a5db17..6fea394a 100755
94 --- a/src/apps/ocioconvert/CMakeLists.txt
95 +++ b/src/apps/ocioconvert/CMakeLists.txt
96 @@ -27,7 +27,7 @@ set_target_properties(ocioconvert PROPERTIES
97 target_link_libraries(ocioconvert
105 diff --git a/src/apps/ocioconvert/main.cpp b/src/apps/ocioconvert/main.cpp
106 index b56d4999..7e8af7d0 100644
107 --- a/src/apps/ocioconvert/main.cpp
108 +++ b/src/apps/ocioconvert/main.cpp
109 @@ -24,7 +24,7 @@ namespace OIIO = OIIO_NAMESPACE;
110 #endif // OCIO_GPU_ENABLED
112 #include "oiiohelpers.h"
113 -#include "OpenEXR/half.h"
114 +#include "Imath/half.h"
117 // Array of non OpenColorIO arguments.
118 diff --git a/src/apps/ocioperf/CMakeLists.txt b/src/apps/ocioperf/CMakeLists.txt
119 index 69e9ba4c..bcbe47be 100644
120 --- a/src/apps/ocioperf/CMakeLists.txt
121 +++ b/src/apps/ocioperf/CMakeLists.txt
122 @@ -20,7 +20,7 @@ set_target_properties(ocioperf PROPERTIES
123 target_link_libraries(ocioperf
130 OpenImageIO::OpenImageIO
131 diff --git a/src/apps/ocioperf/main.cpp b/src/apps/ocioperf/main.cpp
132 index 6427860d..f6e4a63c 100644
133 --- a/src/apps/ocioperf/main.cpp
134 +++ b/src/apps/ocioperf/main.cpp
135 @@ -11,7 +11,7 @@ namespace OIIO = OIIO_NAMESPACE;
138 #include "apputils/argparse.h"
139 -#include "OpenEXR/half.h"
140 +#include "Imath/half.h"
141 #include "oiiohelpers.h"
142 #include "utils/StringUtils.h"
144 diff --git a/src/libutils/oiiohelpers/CMakeLists.txt b/src/libutils/oiiohelpers/CMakeLists.txt
145 index 6ef7c368..5f4a5113 100644
146 --- a/src/libutils/oiiohelpers/CMakeLists.txt
147 +++ b/src/libutils/oiiohelpers/CMakeLists.txt
148 @@ -31,7 +31,7 @@ target_link_libraries(oiiohelpers
157 diff --git a/src/libutils/oiiohelpers/oiiohelpers.cpp b/src/libutils/oiiohelpers/oiiohelpers.cpp
158 index be1a937d..e7db652c 100644
159 --- a/src/libutils/oiiohelpers/oiiohelpers.cpp
160 +++ b/src/libutils/oiiohelpers/oiiohelpers.cpp
162 #include <OpenColorIO/OpenColorIO.h>
165 -#include "OpenEXR/half.h"
166 +#include "Imath/half.h"
167 #include "oiiohelpers.h"
168 #include "utils/StringUtils.h"
170 diff --git a/tests/cpu/CMakeLists.txt b/tests/cpu/CMakeLists.txt
171 index 67389962..8e8dd900 100755
172 --- a/tests/cpu/CMakeLists.txt
173 +++ b/tests/cpu/CMakeLists.txt
174 @@ -18,7 +18,7 @@ function(add_ocio_test NAME SOURCES PRIVATE_INCLUDES)