diff --git a/rtengine/imageio.cc b/rtengine/imageio.cc
index 88274cdb4..1b6a4ad20 100644
--- a/rtengine/imageio.cc
+++ b/rtengine/imageio.cc
@@ -1484,30 +1484,9 @@ int ImageIO::saveTIFF (Glib::ustring fname, int bps, bool uncompressed)
         TIFFSetField (out, TIFFTAG_ICCPROFILE, profileLength, profileData);
     }
 
-#if __BYTE_ORDER__==__ORDER_LITTLE_ENDIAN__
-    bool needsReverse = (bps == 16 || bps == 32) && exifRoot->getOrder() == rtexif::MOTOROLA;
-#else
-    bool needsReverse = (bps == 16 || bps == 32) && exifRoot->getOrder() == rtexif::INTEL;
-#endif
-
     for (int row = 0; row < height; row++) {
         getScanline (row, linebuffer, bps);
 
-        if (needsReverse) {
-            if (bps == 16) {
-                for (int i = 0; i < lineWidth; i += 2) {
-                    char c = linebuffer[i];
-                    linebuffer[i] = linebuffer[i + 1];
-                    linebuffer[i + 1] = c;
-                }
-            } else {
-                for (int i = 0; i < lineWidth; i += 4) {
-                    std::swap(linebuffer[i], linebuffer[i+3]);
-                    std::swap(linebuffer[i+1], linebuffer[i+2]);
-                }
-            }
-        }
-
         if (TIFFWriteScanline (out, linebuffer, row, 0) < 0) {
             TIFFClose (out);
             delete [] linebuffer;
diff --git a/rtengine/improccoordinator.cc b/rtengine/improccoordinator.cc
index f79e173e9..765c4b704 100644
--- a/rtengine/improccoordinator.cc
+++ b/rtengine/improccoordinator.cc
@@ -1284,6 +1284,8 @@ void ImProcCoordinator::saveInputICCReference (const Glib::ustring& fname, bool
         im = tempImage;
     }
 
+    im->setMetadata (imgsrc->getMetaData()->getRootExifData ());
+
     im->saveTIFF (fname, 16, true);
     delete im;
 
diff --git a/rtengine/improcfun.cc b/rtengine/improcfun.cc
index 7a9ac8b82..7505bccec 100644
--- a/rtengine/improcfun.cc
+++ b/rtengine/improcfun.cc
@@ -3930,22 +3930,14 @@ void ImProcFunctions::rgbProc (Imagefloat* working, LabImage* lab, PipetteBuffer
                 }
 
                 if (sat != 0 || hCurveEnabled || sCurveEnabled || vCurveEnabled) {
+                    const float satby100 = sat / 100.f;
                     for (int i = istart, ti = 0; i < tH; i++, ti++) {
                         for (int j = jstart, tj = 0; j < tW; j++, tj++) {
-
-                            const float satby100 = sat / 100.f;
-                            float r = rtemp[ti * TS + tj];
-                            float g = gtemp[ti * TS + tj];
-                            float b = btemp[ti * TS + tj];
                             float h, s, v;
-                            Color::rgb2hsv (r, g, b, h, s, v);
-
+                            Color::rgb2hsvtc(rtemp[ti * TS + tj], gtemp[ti * TS + tj], btemp[ti * TS + tj], h, s, v);
+                            h /= 6.f;
                             if (sat > 0) {
-                                s = (1.f - satby100) * s + satby100 * (1.f - SQR (SQR (1.f - min (s, 1.0f))));
-
-                                if (s < 0.f) {
-                                    s = 0.f;
-                                }
+                                s = std::max(0.f, intp(satby100, 1.f - SQR(SQR(1.f - std::min(s, 1.0f))), s));
                             } else { /*if (sat < 0)*/
                                 s *= 1.f + satby100;
                             }
@@ -4000,7 +3992,7 @@ void ImProcFunctions::rgbProc (Imagefloat* working, LabImage* lab, PipetteBuffer
 
                             }
 
-                            Color::hsv2rgb (h, s, v, rtemp[ti * TS + tj], gtemp[ti * TS + tj], btemp[ti * TS + tj]);
+                            Color::hsv2rgbdcp(h * 6.f, s, v, rtemp[ti * TS + tj], gtemp[ti * TS + tj], btemp[ti * TS + tj]);
                         }
                     }
                 }
diff --git a/rtgui/fattaltonemap.cc b/rtgui/fattaltonemap.cc
index a6f4c5190..5e4aa20d9 100644
--- a/rtgui/fattaltonemap.cc
+++ b/rtgui/fattaltonemap.cc
@@ -26,7 +26,7 @@ using namespace rtengine::procparams;
 
 FattalToneMapping::FattalToneMapping(): FoldableToolPanel(this, "fattal", M("TP_TM_FATTAL_LABEL"), true, true)
 {
-    amount = Gtk::manage(new Adjuster (M("TP_TM_FATTAL_AMOUNT"), 1., 100., 30., 0.0));
+    amount = Gtk::manage(new Adjuster (M("TP_TM_FATTAL_AMOUNT"), 1., 100., 1., 30.));
     threshold = Gtk::manage(new Adjuster (M("TP_TM_FATTAL_THRESHOLD"), -100., 100., 1., 0.0));
 
     amount->setAdjusterListener(this);