diff --git a/rtengine/procparams.cc b/rtengine/procparams.cc
index 1252fc0b4..96f8be01f 100644
--- a/rtengine/procparams.cc
+++ b/rtengine/procparams.cc
@@ -123,7 +123,7 @@ RetinexParams::RetinexParams ()
 
 void RetinexParams::getDefaulttransmissionCurve(std::vector<double> &curve)
 {
-    double v[12] =   {   0.00, 0.34, 0.35, 0.35,
+    double v[12] =   {   0.00, 0.50, 0.35, 0.35,
                          0.60, 0.75, 0.35, 0.35,
                          1.00, 0.50, 0.35, 0.35,
                      };
diff --git a/rtgui/retinex.cc b/rtgui/retinex.cc
index b0db92448..167e8efeb 100644
--- a/rtgui/retinex.cc
+++ b/rtgui/retinex.cc
@@ -168,7 +168,7 @@ Retinex::Retinex () : FoldableToolPanel(this, "retinex", M("TP_RETINEX_LABEL"),
 //    vart   = Gtk::manage (new Adjuster (M("TP_RETINEX_VARIANCE"), 50, 500, 1, 125));
     limd   = Gtk::manage (new Adjuster (M("TP_RETINEX_THRESHOLD"), 2, 100, 1, 8));
     baselog   = Gtk::manage (new Adjuster (M("TP_RETINEX_BASELOG"), 1., 10., 1., 3.));
-    skal   = Gtk::manage (new Adjuster (M("TP_RETINEX_SKAL"), 1, 10, 1, 3));
+    skal   = Gtk::manage (new Adjuster (M("TP_RETINEX_SKAL"), 1, 8, 1, 3));
     gain->set_tooltip_markup (M("TP_RETINEX_GAIN_TOOLTIP"));
     scal->set_tooltip_markup (M("TP_RETINEX_SCALES_TOOLTIP"));
     iter->set_tooltip_markup (M("TP_RETINEX_ITER_TOOLTIP"));