diff --git a/rtdata/dcpprofiles/CANON EOS R5.dcp b/rtdata/dcpprofiles/CANON EOS R5.dcp
new file mode 100644
index 000000000..88f94620d
Binary files /dev/null and b/rtdata/dcpprofiles/CANON EOS R5.dcp differ
diff --git a/rtdata/dcpprofiles/CANON EOS R6.dcp b/rtdata/dcpprofiles/CANON EOS R6.dcp
new file mode 100644
index 000000000..7aaa04ab2
Binary files /dev/null and b/rtdata/dcpprofiles/CANON EOS R6.dcp differ
diff --git a/rtengine/camconst.json b/rtengine/camconst.json
index 578ff1811..eca17a238 100644
--- a/rtengine/camconst.json
+++ b/rtengine/camconst.json
@@ -1149,6 +1149,22 @@ Camera constants:
         "raw_crop": [ 144, 46, 6744, 4500 ]
     },
 
+    { // Quality C
+        "make_model": "Canon EOS R5",
+        "dcraw_matrix" : [9766, -2953, -1254, -4276, 12116, 2433, -437, 1336, 5131],
+        "raw_crop" : [ 124, 92, 8220, 5486 ],
+        "masked_areas" : [ 94, 20, 5578, 122 ],
+        "ranges" : { "white" : 16382 } 
+    },
+
+    { // Quality C
+        "make_model": "Canon EOS R6",
+        "dcraw_matrix" : [8293, -1611, -1132, -4759, 12710, 2275, -1013, 2415, 5508],
+        "raw_crop": [ 72, 38, 5496, 3670 ],
+        "masked_areas" : [ 40, 10, 5534, 70 ],
+        "ranges" : { "white" : 16382 }
+    },
+    
 // Canon Powershot
     { // Quality C, CHDK DNGs, raw frame correction
         "make_model": "Canon PowerShot A3100 IS",
@@ -1729,6 +1745,11 @@ Camera constants:
         "pdaf_offset" : 32
     },
 
+    { // Quality C, only dcraw looted from ART commit ad88c7d97
+        "make_model" : "NIKON Z 5",
+        "dcraw_matrix" : [8695, -2558, -648, -5015, 12711, 2575, -1279, 2215, 7514]
+    },
+
     { // Quality A, white levels and PDAF lines measured by Yann Leprince #5851
         "make_model" : "Nikon Z 50",
         "dcraw_matrix" : [11640, -4829, -1079, -5107, 13006, 2325, -972, 1711, 7380], // Adobe DNG Converter 12.2.1 ColorMatrix2 (D65)
diff --git a/rtengine/canon_cr3_decoder.cc b/rtengine/canon_cr3_decoder.cc
index 51beb66f3..e3097ad2e 100644
--- a/rtengine/canon_cr3_decoder.cc
+++ b/rtengine/canon_cr3_decoder.cc
@@ -3132,7 +3132,8 @@ void DCraw::crxLoadRaw()
         hdr.tileHeight >>= 1;
     }
 
-//  /*imgdata.color.*/maximum = (1 << hdr.nBits) - 1;
+    //  /*imgdata.color.*/maximum = (1 << hdr.nBits) - 1;
+    tiff_bps = hdr.nBits;
 
     std::uint8_t* const hdrBuf = static_cast<std::uint8_t*>(malloc(hdr.mdatHdrSize));