diff --git a/src/ControlManager.cpp b/src/ControlManager.cpp
index d870fdb..04ed93d 100644
--- a/src/ControlManager.cpp
+++ b/src/ControlManager.cpp
@@ -826,8 +826,21 @@ bool Control::receiveSourceAttribute(Source *target, const std::string &attribut
         /// e.g. '/vimix/current/posterize f 1'
         else if ( attribute.compare(OSC_SOURCE_POSTERIZE) == 0) {
             float v = 0.f;
-            arguments >> v >> osc::EndMessage;
-            target->call( new SetPosterize( v ), true );
+            float t = 0.f;
+            arguments >> v;
+            if (arguments.Eos())
+                arguments >> osc::EndMessage;
+            else
+                arguments >> t >> osc::EndMessage;
+            target->call( new SetPosterize( v, t ), true );
+        }
+        /// e.g. '/vimix/current/correction f 1'
+        else if (attribute.compare(OSC_SOURCE_CORRECTION) == 0) {
+            float on = 1.f;
+            if (!arguments.Eos()) {
+                arguments >> on >> osc::EndMessage;
+            }
+            target->setImageProcessingEnabled(on > 0.5f);
         }
         /// e.g. '/vimix/current/seek f 0.25' ; seek to 25% of duration
         /// e.g. '/vimix/current/seek iiii 0 0 25 500' ; seek to time
@@ -849,9 +862,14 @@ bool Control::receiveSourceAttribute(Source *target, const std::string &attribut
         }
         /// e.g. '/vimix/current/speed f 0.25'
         else if (attribute.compare(OSC_SOURCE_SPEED) == 0) {
+            float v = 0.f;
             float t = 0.f;
-            arguments >> t >> osc::EndMessage;
-            target->call(new PlaySpeed(t), true);
+            arguments >> v;
+            if (arguments.Eos())
+                arguments >> osc::EndMessage;
+            else
+                arguments >> t >> osc::EndMessage;
+            target->call(new PlaySpeed( v, t ), true);
         }
         /// e.g. '/vimix/current/contents s text'
         else if (attribute.compare(OSC_SOURCE_CONTENTS) == 0) {
diff --git a/src/ControlManager.h b/src/ControlManager.h
index a30951f..5ccd770 100644
--- a/src/ControlManager.h
+++ b/src/ControlManager.h
@@ -62,6 +62,7 @@
 #define OSC_SOURCE_COLOR       "/color"
 #define OSC_SOURCE_POSTERIZE   "/posterize"
 #define OSC_SOURCE_INVERT      "/invert"
+#define OSC_SOURCE_CORRECTION  "/correction"
 
 #define OSC_SESSION            "/session"
 #define OSC_SESSION_VERSION    "/version"
diff --git a/src/SourceCallback.cpp b/src/SourceCallback.cpp
index 3a8aae9..e2047cf 100644
--- a/src/SourceCallback.cpp
+++ b/src/SourceCallback.cpp
@@ -1009,7 +1009,7 @@ void SetInvert::writeValue(Source *s, float val)
 
 SetPosterize::SetPosterize(float v, float ms, bool r) : ValueSourceCallback(v, ms, r)
 {
-    target_ = glm::clamp(target_, 0.f, 128.f);
+    target_ = glm::clamp(target_, 0.f, 256.f);
 }
 
 float SetPosterize::readValue(Source *s) const
diff --git a/src/TextSource.cpp b/src/TextSource.cpp
index ecdb88c..3f88858 100644
--- a/src/TextSource.cpp
+++ b/src/TextSource.cpp
@@ -245,7 +245,7 @@ void TextContents::open(const std::string &text, glm::ivec2 res)
 
 void TextContents::setText(const std::string &t)
 {
-    if ( src_ == nullptr && !t.empty() && text_.compare(t) != 0) {
+    if ( src_ == nullptr && text_.compare(t) != 0) {
         // set text
         text_ = t;
         // apply if ready