diff --git a/rtengine/camconst.json b/rtengine/camconst.json
index abdf84c7d..396bdcf30 100644
--- a/rtengine/camconst.json
+++ b/rtengine/camconst.json
@@ -1290,6 +1290,11 @@ Camera constants:
         "ranges": { "white": 16100 }
     },
 
+    { // Quality C
+        "make_model": "FUJIFILM X-A5",
+        "ranges": { "white": 16100 }
+    },
+
     { // Quality B
         "make_model": "FUJIFILM X-A10",
         "dcraw_matrix": [ 11540,-4999,-991,-2949,10963,2278,-382,1049,5605 ], // DNGv9.12 D65
@@ -1305,6 +1310,11 @@ Camera constants:
         "ranges": { "white": 16100 }
     },
 
+    { // Quality C
+        "make_model": [ "FUJIFILM X-T100" ],
+        "ranges": { "white": 16100 }
+    },
+
     { // Quality B
         "make_model": "FUJIFILM X-E2S",
         "dcraw_matrix": [ 11562,-5118,-961,-3022,11007,2311,-525,1569,6097 ], // DNG_v9.4 D65
@@ -1677,6 +1687,11 @@ Camera constants:
         "ranges": { "white": 4040 } // nominal 4056
     },
 
+    { // Quality C
+        "make_model": [ "OLYMPUS E-PL9" ],
+        "ranges": { "white": 4080 } // nominal 4093
+    },
+
     { // Quality B, with long exposure noise reduction White Level gets WL-BL = around 256_12-bit levels less
         "make_model": [ "OLYMPUS E-PL7", "OLYMPUS E-PL8" ],
         "global_green_equilibration" : true,
@@ -2365,7 +2380,7 @@ Camera constants:
     },
 
     { // Quality C, correction for frame width
-        "make_model": [ "Sony DSC-RX0M2" ],
+        "make_model": [ "Sony DSC-RX0", "Sony DSC-RX0M2" ],
         "raw_crop": [ 0, 0, -8, 0 ] // 8 rightmost columns are garbage
     },
 
@@ -2443,7 +2458,8 @@ Camera constants:
 
     { // Quality C
         "make_model": [ "Sony DSC-R1" ],
-        "raw_crop": [ 0, 0, 3924, 2608 ]
+        "raw_crop": [ 0, 0, 3924, 2608 ],
+        "ranges": { "white": 16368 }
     },
 
     { // Quality A