Add ISO setting of the camera

src/doc/builtinplugins.rst

@@ -1537,6 +1537,9 @@ The official OpenEXR site is http://www.openexr.com/.
    * - ``ExposureTime``
      - float
      - expTime
+   * - ``ISOSpeed``
+     - float
+     - isoSpeed
    * - ``FNumber``
      - float
      - aperture

src/doc/stdmetadata.rst

@@ -289,6 +289,10 @@ The following metadata items are specific to photos or captured images.
 
     The exposure time (in seconds) of the captured image.
 
+.. option:: "ISOSpeed" : float
+
+    The ISO speed of the camera when it captured the image.
+
 .. option:: "FNumber" : float
 
     The f/stop of the camera when it captured the image.

src/openexr.imageio/exrinput.cpp

@@ -115,9 +115,10 @@ static std::map<std::string, std::string> exr_tag_to_oiio_std {
     { "pixelAspectRatio", "PixelAspectRatio" },
     { "xDensity", "XResolution" },
     { "expTime", "ExposureTime" },
+    { "isoSpeed", "ISOSpeed" },
+    { "aperture", "FNumber" },
     // Ones we don't rename -- OpenEXR convention matches ours
     { "wrapmodes", "wrapmodes" },
-    { "aperture", "FNumber" },
     // Ones to prefix with openexr:
     { "chunkCount", "openexr:chunkCount" },
     { "maxSamplesPerPixel", "openexr:maxSamplesPerPixel" },

src/openexr.imageio/exrinput_c.cpp

@@ -263,9 +263,10 @@ static std::map<std::string, std::string> cexr_tag_to_oiio_std {
     { "pixelAspectRatio", "PixelAspectRatio" },
     { "xDensity", "XResolution" },
     { "expTime", "ExposureTime" },
+    { "isoSpeed", "ISOSpeed" },
+    { "aperture", "FNumber" },
     // Ones we don't rename -- OpenEXR convention matches ours
     { "wrapmodes", "wrapmodes" },
-    { "aperture", "FNumber" },
     // Ones to prefix with openexr:
     { "chunkCount", "openexr:chunkCount" },
     { "maxSamplesPerPixel", "openexr:maxSamplesPerPixel" },

src/openexr.imageio/exroutput.cpp

@@ -898,6 +898,7 @@ static ExrMeta exr_meta_translation[] = {
     ExrMeta("XResolution", "xDensity", TypeFloat),
     ExrMeta("ExposureTime", "expTime", TypeFloat),
     ExrMeta("FNumber", "aperture", TypeFloat),
+    ExrMeta("ISOSpeed", "isoSpeed", TypeFloat),
     ExrMeta("oiio:subimagename", "name", TypeString),
     ExrMeta("openexr:dwaCompressionLevel", "dwaCompressionLevel", TypeFloat),
     ExrMeta("smpte:TimeCode", "timeCode", TypeTimeCode),