diff --git a/rtengine/camconst.json b/rtengine/camconst.json
index 8639ea2e1..a3bab58a8 100644
--- a/rtengine/camconst.json
+++ b/rtengine/camconst.json
@@ -1398,6 +1398,11 @@ Camera constants:
         "raw_crop": [ 4, 4, -4, -4 ] // full raw 6016x4016, Official 6000x4000
     },
 
+    { // Quality C, only raw crop
+        "make_model": "Leica SL2",
+        "raw_crop": [ 0, 0, 0, -18 ] // 18 rows at bottom are garbage
+    },
+
     { // Quality C
         "make_model": "LG mobile LG-H815",
         "dcraw_matrix": [ 5859,547,-1250,-6484,15547,547,-2422,5625,3906 ], // DNG D65
diff --git a/rtengine/capturesharpening.cc b/rtengine/capturesharpening.cc
index 910de6fd3..281a2ad71 100644
--- a/rtengine/capturesharpening.cc
+++ b/rtengine/capturesharpening.cc
@@ -700,6 +700,10 @@ namespace rtengine
 
 void RawImageSource::captureSharpening(const procparams::CaptureSharpeningParams &sharpeningParams, bool showMask, double &conrastThreshold, double &radius) {
 
+    if (!(ri->getSensorType() == ST_BAYER || ri->getSensorType() == ST_FUJI_XTRANS || ri->get_colors() == 1)) {
+        return;
+    }
+
     if (plistener) {
         plistener->setProgressStr(M("TP_PDSHARPENING_LABEL"));
         plistener->setProgress(0.0);