diff --git a/example/u3v_camera1_opencv/u3v_camera1_opencv.cc b/example/u3v_camera1_opencv/u3v_camera1_opencv.cc
index 91cff7ac..1c8046fb 100644
--- a/example/u3v_camera1_opencv/u3v_camera1_opencv.cc
+++ b/example/u3v_camera1_opencv/u3v_camera1_opencv.cc
@@ -19,8 +19,8 @@ using namespace ion;
 //  Resize it according to the resolution of the sensor.
 const int32_t width = 640;
 const int32_t height = 480;
-int32_t gain = 400;
-int32_t exposure = 400;
+double gain = 400;
+double exposure = 400;
 
 #ifdef _WIN32
     #define MODULE_NAME "ion-bb.dll"
@@ -54,10 +54,10 @@ int main(int argc, char *argv[])
   // Define the input port
   //  Port class is used to define dynamic I/O for each node.
   Port dispose_p{ "dispose",  Halide::type_of<bool>() };
-  Port gain0_p{ "gain0", Halide::type_of<int32_t>() };
-  Port gain1_p{ "gain1", Halide::type_of<int32_t>() };
-  Port exposure0_p{ "exposure0", Halide::type_of<int32_t>() };
-  Port exposure1_p{ "exposure1", Halide::type_of<int32_t>() };
+  Port gain0_p{ "gain0", Halide::type_of<double>() };
+  Port gain1_p{ "gain1", Halide::type_of<double>() };
+  Port exposure0_p{ "exposure0", Halide::type_of<double>() };
+  Port exposure1_p{ "exposure1", Halide::type_of<double>() };
 
   //  Connect the input port to the Node instance created by b.add().
   Node n = b.add("image_io_u3v_camera1_u16x2")(dispose_p, gain0_p, exposure0_p)
diff --git a/example/u3v_camera1_opencv/u3v_camera1_opencv.py b/example/u3v_camera1_opencv/u3v_camera1_opencv.py
index 8a67d071..13d49cfd 100644
--- a/example/u3v_camera1_opencv/u3v_camera1_opencv.py
+++ b/example/u3v_camera1_opencv/u3v_camera1_opencv.py
@@ -33,7 +33,7 @@
     #    Port class would be  used to define dynamic O/O for each node.
     t = Type(TypeCode.Uint, 1, 1)
     dispose_p = Port('dispose', t, 0)
-    t = Type(TypeCode.Int, 32, 1)
+    t = Type(TypeCode.Float, 64, 1)
     gain0_p = Port('gain0', t, 0)
     exposure0_p = Port('exposure0', t, 0)
 
@@ -59,8 +59,8 @@
     port_map = PortMap()
 
     # input values
-    port_map.set_i32(gain0_p, gain)
-    port_map.set_i32(exposure0_p, exposure)
+    port_map.set_f64(gain0_p, gain)
+    port_map.set_f64(exposure0_p, exposure)
 
     # output values
     buf_size = (width, height, )
diff --git a/example/u3v_camera2_opencv/u3v_camera2_opencv.cc b/example/u3v_camera2_opencv/u3v_camera2_opencv.cc
index cc3fb924..305a05d3 100644
--- a/example/u3v_camera2_opencv/u3v_camera2_opencv.cc
+++ b/example/u3v_camera2_opencv/u3v_camera2_opencv.cc
@@ -19,8 +19,8 @@ using namespace ion;
 //  Resize it according to the resolution of the sensor.
 const int32_t width = 1920;
 const int32_t height = 1080;
-int32_t gain = 400;
-int32_t exposure = 400;
+double gain = 400;
+double exposure = 400;
 
 #ifdef _WIN32
     #define MODULE_NAME "ion-bb.dll"
@@ -54,10 +54,10 @@ int main(int argc, char *argv[])
   // Define the input port
   //  Port class is used to define dynamic I/O for each node.
   Port dispose_p{ "dispose",  Halide::type_of<bool>() };
-  Port gain0_p{ "gain0", Halide::type_of<int32_t>() };
-  Port gain1_p{ "gain1", Halide::type_of<int32_t>() };
-  Port exposure0_p{ "exposure0", Halide::type_of<int32_t>() };
-  Port exposure1_p{ "exposure1", Halide::type_of<int32_t>() };
+  Port gain0_p{ "gain0", Halide::type_of<double>() };
+  Port gain1_p{ "gain1", Halide::type_of<double>() };
+  Port exposure0_p{ "exposure0", Halide::type_of<double>() };
+  Port exposure1_p{ "exposure1", Halide::type_of<double>() };
 
   //  Connect the input port to the Node instance created by b.add().
   Node n = b.add("image_io_u3v_camera2_u16x2")(dispose_p, gain0_p, gain1_p, exposure0_p, exposure1_p)
diff --git a/example/u3v_camera2_opencv/u3v_camera2_opencv.py b/example/u3v_camera2_opencv/u3v_camera2_opencv.py
index fc370907..158ca9d6 100644
--- a/example/u3v_camera2_opencv/u3v_camera2_opencv.py
+++ b/example/u3v_camera2_opencv/u3v_camera2_opencv.py
@@ -33,7 +33,7 @@
     #    Port class would be  used to define dynamic O/O for each node.
     t = Type(TypeCode.Uint, 1, 1)
     dispose_p = Port('dispose', t, 0)
-    t = Type(TypeCode.Int, 32, 1)
+    t = Type(TypeCode.Float, 64, 1)
     gain0_p = Port('gain0', t, 0)
     gain1_p = Port('gain1', t, 0)
     exposure0_p = Port('exposure0', t, 0)
@@ -62,10 +62,10 @@
     port_map = PortMap()
 
     # input values
-    port_map.set_i32(gain0_p, gain)
-    port_map.set_i32(gain1_p, gain)
-    port_map.set_i32(exposure0_p, exposure)
-    port_map.set_i32(exposure1_p, exposure)
+    port_map.set_f64(gain0_p, gain)
+    port_map.set_f64(gain1_p, gain)
+    port_map.set_f64(exposure0_p, exposure)
+    port_map.set_f64(exposure1_p, exposure)
 
     # output values
     buf_size = (width, height, )