diff --git a/rtgui/bayerrawexposure.cc b/rtgui/bayerrawexposure.cc
index 73c96bcf1..f9027c09f 100644
--- a/rtgui/bayerrawexposure.cc
+++ b/rtgui/bayerrawexposure.cc
@@ -28,7 +28,7 @@ using namespace rtengine::procparams;
 
 BayerRAWExposure::BayerRAWExposure () : FoldableToolPanel(this, "bayerrawexposure", M("TP_EXPOS_BLACKPOINT_LABEL"), options.prevdemo != PD_Sidecar)
 {
-    PexBlack1 = Gtk::manage(new Adjuster (M("TP_RAWEXPOS_BLACK_1"), -2048, 2048, 0.1, 0)); //black level
+    PexBlack1 = Gtk::manage(new Adjuster (M("TP_RAWEXPOS_BLACK_1"), -2048, 2048, 1.0, 0)); //black level
     PexBlack1->setAdjusterListener (this);
 
     if (PexBlack1->delay < options.adjusterMaxDelay) {
@@ -36,7 +36,7 @@ BayerRAWExposure::BayerRAWExposure () : FoldableToolPanel(this, "bayerrawexposur
     }
 
     PexBlack1->show();
-    PexBlack2 = Gtk::manage(new Adjuster (M("TP_RAWEXPOS_BLACK_2"), -2048, 2048, 0.1, 0)); //black level
+    PexBlack2 = Gtk::manage(new Adjuster (M("TP_RAWEXPOS_BLACK_2"), -2048, 2048, 1.0, 0)); //black level
     PexBlack2->setAdjusterListener (this);
 
     if (PexBlack2->delay < options.adjusterMaxDelay) {
@@ -44,7 +44,7 @@ BayerRAWExposure::BayerRAWExposure () : FoldableToolPanel(this, "bayerrawexposur
     }
 
     PexBlack2->show();
-    PexBlack3 = Gtk::manage(new Adjuster (M("TP_RAWEXPOS_BLACK_3"), -2048, 2048, 0.1, 0)); //black level
+    PexBlack3 = Gtk::manage(new Adjuster (M("TP_RAWEXPOS_BLACK_3"), -2048, 2048, 1.0, 0)); //black level
     PexBlack3->setAdjusterListener (this);
 
     if (PexBlack3->delay < options.adjusterMaxDelay) {
@@ -52,7 +52,7 @@ BayerRAWExposure::BayerRAWExposure () : FoldableToolPanel(this, "bayerrawexposur
     }
 
     PexBlack3->show();
-    PexBlack0 = Gtk::manage(new Adjuster (M("TP_RAWEXPOS_BLACK_0"), -2048, 2048, 0.1, 0)); //black level
+    PexBlack0 = Gtk::manage(new Adjuster (M("TP_RAWEXPOS_BLACK_0"), -2048, 2048, 1.0, 0)); //black level
     PexBlack0->setAdjusterListener (this);
 
     if (PexBlack0->delay < options.adjusterMaxDelay) {
diff --git a/rtgui/xtransrawexposure.cc b/rtgui/xtransrawexposure.cc
index a863ecfea..93f6ee202 100644
--- a/rtgui/xtransrawexposure.cc
+++ b/rtgui/xtransrawexposure.cc
@@ -30,7 +30,7 @@ using namespace rtengine::procparams;
 
 XTransRAWExposure::XTransRAWExposure () : FoldableToolPanel(this, "xtransrawexposure", M("TP_EXPOS_BLACKPOINT_LABEL"))
 {
-    PexBlackRed = Gtk::manage(new Adjuster (M("TP_RAWEXPOS_BLACK_RED"), -2048, 2048, 0.1, 0)); //black level
+    PexBlackRed = Gtk::manage(new Adjuster (M("TP_RAWEXPOS_BLACK_RED"), -2048, 2048, 1.0, 0)); //black level
     PexBlackRed->setAdjusterListener (this);
 
     if (PexBlackRed->delay < options.adjusterMaxDelay) {
@@ -38,7 +38,7 @@ XTransRAWExposure::XTransRAWExposure () : FoldableToolPanel(this, "xtransrawexpo
     }
 
     PexBlackRed->show();
-    PexBlackGreen = Gtk::manage(new Adjuster (M("TP_RAWEXPOS_BLACK_GREEN"), -2048, 2048, 0.1, 0)); //black level
+    PexBlackGreen = Gtk::manage(new Adjuster (M("TP_RAWEXPOS_BLACK_GREEN"), -2048, 2048, 1.0, 0)); //black level
     PexBlackGreen->setAdjusterListener (this);
 
     if (PexBlackGreen->delay < options.adjusterMaxDelay) {
@@ -46,7 +46,7 @@ XTransRAWExposure::XTransRAWExposure () : FoldableToolPanel(this, "xtransrawexpo
     }
 
     PexBlackGreen->show();
-    PexBlackBlue = Gtk::manage(new Adjuster (M("TP_RAWEXPOS_BLACK_BLUE"), -2048, 2048, 0.1, 0)); //black level
+    PexBlackBlue = Gtk::manage(new Adjuster (M("TP_RAWEXPOS_BLACK_BLUE"), -2048, 2048, 1.0, 0)); //black level
     PexBlackBlue->setAdjusterListener (this);
 
     if (PexBlackBlue->delay < options.adjusterMaxDelay) {