diff --git a/rtengine/dcrop.cc b/rtengine/dcrop.cc
index 7d2d573ba..7ddf9ed8f 100644
--- a/rtengine/dcrop.cc
+++ b/rtengine/dcrop.cc
@@ -1067,8 +1067,8 @@ void Crop::update(int todo)
                             guid[ir][jr] = provradius->L[ir][jr] / 32768.f;
                         }
 
-                    float blur = 10.f / skip * (0.1f + 0.8f * WaveParams.softrad);
-                    rtengine::guidedFilter(guid, ble, ble, blur, 0.001, false);
+                    float blur = 10.f / skip * (0.01f + 0.8f * WaveParams.softrad);
+                    rtengine::guidedFilter(guid, ble, ble, blur, 0.0005, false);
 
 
 
diff --git a/rtengine/improccoordinator.cc b/rtengine/improccoordinator.cc
index 1c5b1d5df..1f18a3527 100644
--- a/rtengine/improccoordinator.cc
+++ b/rtengine/improccoordinator.cc
@@ -940,9 +940,9 @@ void ImProcCoordinator::updatePreviewImage(int todo, bool panningRelatedChange)
                                 guid[ir][jr] = provradius->L[ir][jr] / 32768.f;
                             }
 
-                        float blur = 10.f / scale * (0.1f + 0.8f * WaveParams.softrad);
+                        float blur = 10.f / scale * (0.01f + 0.8f * WaveParams.softrad);
                         // rtengine::guidedFilter(guid, ble, ble, blur, 0.001, multiTh);
-                        rtengine::guidedFilter(guid, ble, ble, blur, 0.001, false);
+                        rtengine::guidedFilter(guid, ble, ble, blur, 0.0005, false);
 
 
 
diff --git a/rtengine/simpleprocess.cc b/rtengine/simpleprocess.cc
index d4cdfc81e..50badfdd6 100644
--- a/rtengine/simpleprocess.cc
+++ b/rtengine/simpleprocess.cc
@@ -1211,9 +1211,9 @@ private:
                             guid[ir][jr] = provradius->L[ir][jr] / 32768.f;
                         }
 
-                    float blur = 10.f / 1 * (0.1f + 0.8f * WaveParams.softrad);
+                    float blur = 10.f / 1 * (0.01f + 0.8f * WaveParams.softrad);
                     // rtengine::guidedFilter(guid, ble, ble, blur, 0.001, multiTh);
-                    rtengine::guidedFilter(guid, ble, ble, blur, 0.001, false);
+                    rtengine::guidedFilter(guid, ble, ble, blur, 0.0005, false);
 
 
 
diff --git a/rtgui/wavelet.cc b/rtgui/wavelet.cc
index cda404d2a..4397e1662 100644
--- a/rtgui/wavelet.cc
+++ b/rtgui/wavelet.cc
@@ -117,8 +117,8 @@ Wavelet::Wavelet() :
     edgeampli(Gtk::manage(new Adjuster(M("TP_WAVELET_EDGEAMPLI"), 0, 100, 1, 10))),
     mergeL(Gtk::manage(new Adjuster(M("TP_WAVELET_MERGEL"), -50, 100, 1, 40))),
     mergeC(Gtk::manage(new Adjuster(M("TP_WAVELET_MERGEC"), -50, 100, 1, 20))),
-    softrad(Gtk::manage(new Adjuster(M("TP_WAVELET_SOFTRAD"), 0.0, 100., 0.1, 0.))),
-    softradend(Gtk::manage(new Adjuster(M("TP_WAVELET_SOFTRAD"), 0.0, 100., 0.1, 0.))),
+    softrad(Gtk::manage(new Adjuster(M("TP_WAVELET_SOFTRAD"), 0.0, 100., 0.01, 0.))),
+    softradend(Gtk::manage(new Adjuster(M("TP_WAVELET_SOFTRAD"), 0.0, 100., 0.01, 0.))),
     Lmethod(Gtk::manage(new MyComboBoxText())),
     CHmethod(Gtk::manage(new MyComboBoxText())),
     CHSLmethod(Gtk::manage(new MyComboBoxText())),