diff --git a/rtengine/color.h b/rtengine/color.h
index edcc02cb4..f478b1621 100644
--- a/rtengine/color.h
+++ b/rtengine/color.h
@@ -1080,8 +1080,11 @@ public:
     static inline double gamma2     (double x)      //  g3                  1+g4
     {
       //  return x <= 0.003041 ? x * 12.92 : 1.055 * exp(log(x) / 2.39990) - 0.055;//calculate with calcgamma
-        return x <= 0.0031308 ? x * 12.92 : 1.055 * exp(log(x) / sRGBGammaCurve) - 0.055;
+        //return x <= 0.0031308 ? x * 12.92 : 1.055 * exp(log(x) / sRGBGammaCurve) - 0.055;//standard discontinuous
 		//very small differences between the 2
+        return x <= 0.003040 ? x * 12.92310 : 1.055 * exp(log(x) / sRGBGammaCurve) - 0.055;//continuous
+      //  return x <= 0.003041 ? x * 12.92 : 1.055011 * exp(log(x) / sRGBGammaCurve) - 0.055011;//continuous
+		
     }
 
 
@@ -1094,8 +1097,11 @@ public:
     static inline double igamma2    (double x)      //g2
     {
        // return x <= 0.039289 ? x / 12.92 : exp(log((x + 0.055) / 1.055) * 2.39990);//calculate with calcgamma
-        return x <= 0.04045 ? x / 12.92 : exp(log((x + 0.055) / 1.055) * sRGBGammaCurve);
-		//very small differences between the 2
+       // return x <= 0.04045 ? x / 12.92 : exp(log((x + 0.055) / 1.055) * sRGBGammaCurve);//standard discontinuous
+		//very small differences between the 4
+        return x <= 0.039286 ? x / 12.92310 : exp(log((x + 0.055) / 1.055) * sRGBGammaCurve);//continuous
+      //  return x <= 0.039293 ? x / 12.92 : exp(log((x + 0.055011) / 1.055011) * sRGBGammaCurve);//continuous
+		
     }
 
 
diff --git a/rtengine/iccstore.cc b/rtengine/iccstore.cc
index 15fb366a0..f133dfce8 100644
--- a/rtengine/iccstore.cc
+++ b/rtengine/iccstore.cc
@@ -1083,7 +1083,7 @@ void rtengine::ICCStore::getGammaArray(const procparams::ColorManagementParams &
         ga[3] = 1. / slope;
         ga[5] = 0.0;
         ga[6] = 0.0;
-        printf("ga[0]=%f ga[1]=%f ga[2]=%f ga[3]=%f ga[4]=%f\n", ga[0],ga[1],ga[2],ga[3],ga[4]);
+     //   printf("ga[0]=%f ga[1]=%f ga[2]=%f ga[3]=%f ga[4]=%f\n", ga[0],ga[1],ga[2],ga[3],ga[4]);
     }
 }
 
diff --git a/rtgui/icmpanel.cc b/rtgui/icmpanel.cc
index ce0c6a8f7..e6c6946b8 100644
--- a/rtgui/icmpanel.cc
+++ b/rtgui/icmpanel.cc
@@ -251,7 +251,7 @@ ICMPanel::ICMPanel () : FoldableToolPanel(this, "icm", M("TP_ICM_LABEL")), iunch
     }
 
     gampos->show();
-    slpos = Gtk::manage(new Adjuster (M("TP_GAMMA_SLOP"), 0, 15, 0.01, 4.5));
+    slpos = Gtk::manage(new Adjuster (M("TP_GAMMA_SLOP"), 0, 15, 0.00001, 4.5));
     slpos->setAdjusterListener (this);
 
     if (slpos->delay < options.adjusterMaxDelay) {