diff -u -r a/src/cmake/Config.cmake.in b/src/cmake/Config.cmake.in
--- a/src/cmake/Config.cmake.in
+++ b/src/cmake/Config.cmake.in
@@ -6,6 +6,26 @@
 
 include(CMakeFindDependencyMacro)
 
+if(@USE_GIF@)
+    find_dependency(GIF)
+endif()
+if(@USE_LIBHEIF@)
+    find_dependency(libheif CONFIG)
+endif()
+find_dependency(PNG)
+if(@USE_OPENCV@)
+    find_dependency(OpenCV CONFIG)
+endif()
+if(@USE_OPENCOLORIO@)
+    find_dependency(OpenColorIO CONFIG)
+endif()
+if(@USE_OPENJPEG@)
+    find_dependency(OpenJPEG CONFIG)
+endif()
+if(@USE_WEBP@)
+    find_dependency(WebP CONFIG)
+endif()
+
 # add here all the find_dependency() whenever switching to config based dependencies
 if (NOT @OPENIMAGEIO_CONFIG_DO_NOT_FIND_IMATH@ AND NOT OPENIMAGEIO_CONFIG_DO_NOT_FIND_IMATH)
     if (@OpenEXR_VERSION@ VERSION_GREATER_EQUAL 3.0)
diff -u -r a/src/cmake/externalpackages.cmake b/src/cmake/externalpackages.cmake
--- a/src/cmake/externalpackages.cmake
+++ b/src/cmake/externalpackages.cmake
@@ -177,10 +177,13 @@
 checked_find_package (Freetype
                    DEFINITIONS  -DUSE_FREETYPE=1 )
 
-checked_find_package (OpenColorIO
+set(OPENCOLORIO_INCLUDES "")
+set(OPENCOLORIO_LIBRARIES OpenColorIO::OpenColorIO)
+checked_find_package (OpenColorIO CONFIG
                       DEFINITIONS  -DUSE_OCIO=1 -DUSE_OPENCOLORIO=1
                       # PREFER_CONFIG
                       )
+set(OPENCOLORIO_FOUND "${OpenColorIO_FOUND}")
 if (OpenColorIO_FOUND)
     option (OIIO_DISABLE_BUILTIN_OCIO_CONFIGS
            "For deveoper debugging/testing ONLY! Disable OCIO 2.2 builtin configs." OFF)
@@ -191,7 +194,9 @@
     set (OpenColorIO_FOUND 0)
 endif ()
 
-checked_find_package (OpenCV 3.0
+set(OPENCV_INCLUDES "")
+set(OPENCV_LIBRARIES opencv_core)
+checked_find_package (OpenCV CONFIG
                    DEFINITIONS  -DUSE_OPENCV=1)
 
 # Intel TBB
@@ -205,12 +210,16 @@
                       PREFER_CONFIG)
 
-checked_find_package (FFmpeg VERSION_MIN 3.0)
+checked_find_package (FFmpeg)
+set(FFmpeg_FOUND "${FFMPEG_FOUND}")
+set(FFMPEG_INCLUDES "${FFMPEG_INCLUDE_DIRS}")
 checked_find_package (GIF
                       VERSION_MIN 4
                       RECOMMEND_MIN 5.0
                       RECOMMEND_MIN_REASON "for stability and thread safety")
 
 # For HEIF/HEIC/AVIF formats
+set(LIBHEIF_INCLUDES "")
+set(LIBHEIF_LIBRARIES heif)
 checked_find_package (Libheif VERSION_MIN 1.3
                       RECOMMEND_MIN 1.16
                       RECOMMEND_MIN_REASON "for orientation support")
@@ -231,9 +240,8 @@
     # set (LIBRAW_FOUND 0)
 endif ()
 
-checked_find_package (OpenJPEG VERSION_MIN 2.0
-                      RECOMMEND_MIN 2.2
-                      RECOMMEND_MIN_REASON "for multithreading support")
+set(CMAKE_REQUIRE_FIND_PACKAGE_OpenJPEG ${USE_OPENJPEG})
+checked_find_package (OpenJPEG CONFIG)
 # Note: Recent OpenJPEG versions have exported cmake configs, but we don't
 # find them reliable at all, so we stick to our FindOpenJPEG.cmake module.
 
@@ -255,6 +263,8 @@
     checked_find_package (Ptex)
 endif ()
 
+set(WEBP_INCLUDES "")
+set(WEBP_LIBRARIES WebP::webp WebP::webpdemux)
 checked_find_package (WebP)
 # Note: When WebP 1.1 (released late 2019) is our minimum, we can use their
 # exported configs and remove our FindWebP.cmake module.