diff --git a/rtengine/CA_correct_RT.cc b/rtengine/CA_correct_RT.cc
index be85fff47..7abd9bfcc 100644
--- a/rtengine/CA_correct_RT.cc
+++ b/rtengine/CA_correct_RT.cc
@@ -1267,10 +1267,10 @@ float* RawImageSource::CA_correct_RT(
                 nonGreen = colour == 0 ? &redFactor : &blueFactor;
                 int j = firstCol;
                 for(; j < W - 1; j += 2) {
-                    (*nonGreen)[i/2][j/2] = rtengine::LIM((rawData[i][j] <= 1.f || (*oldraw)[i][j / 2] <= 1.f) ? 1.f : (*oldraw)[i][j / 2] / rawData[i][j], 0.5f, 1.5f);
+                    (*nonGreen)[i/2][j/2] = rtengine::LIM((rawData[i][j] <= 1.f || (*oldraw)[i][j / 2] <= 1.f) ? 1.f : (*oldraw)[i][j / 2] / rawData[i][j], 0.5f, 2.f);
                 }
                 if (j < W) {
-                    (*nonGreen)[i/2][j/2] = rtengine::LIM((rawData[i][j] <= 1.f || (*oldraw)[i][j / 2] <= 1.f) ? 1.f : (*oldraw)[i][j / 2] / rawData[i][j], 0.5f, 1.5f);
+                    (*nonGreen)[i/2][j/2] = rtengine::LIM((rawData[i][j] <= 1.f || (*oldraw)[i][j / 2] <= 1.f) ? 1.f : (*oldraw)[i][j / 2] / rawData[i][j], 0.5f, 2.f);
                 }
             }
 
diff --git a/rtgui/rawcacorrection.cc b/rtgui/rawcacorrection.cc
index 9a1001f74..fd69ab063 100644
--- a/rtgui/rawcacorrection.cc
+++ b/rtgui/rawcacorrection.cc
@@ -38,7 +38,7 @@ RAWCACorr::RAWCACorr () : FoldableToolPanel(this, "rawcacorrection", M("TP_CHROM
     caAutocorrect = Gtk::manage (new CheckBox(M("TP_RAWCACORR_AUTO"), multiImage));
     caAutocorrect->setCheckBoxListener (this);
 
-    caAutoiterations = Gtk::manage(new Adjuster (M("TP_RAWCACORR_AUTOIT"), 1, 5, 1, 2));
+    caAutoiterations = Gtk::manage(new Adjuster (M("TP_RAWCACORR_AUTOIT"), 1, 10, 1, 2));
     caAutoiterations->setAdjusterListener (this);
 
     if (caAutoiterations->delay < options.adjusterMaxDelay) {