diff --git a/ccd_defs.json b/ccd_defs.json
index a9355b95..8e642450 100644
--- a/ccd_defs.json
+++ b/ccd_defs.json
@@ -215,6 +215,9 @@
   "OLYMPUS IMAGING CORP.   uD600,S600": 5.75,
   "OLYMPUS_IMAGING_CORP.   X450,D535Z,C370Z": 5.27,
   "OLYMPUS IMAGING CORP. X550,D545Z,C480Z": 5.76,
+  "Olympus E-M10": 17.3,
+  "Olympus E-PL5": 17.3,
+  "Olympus E-PL6": 17.3,
   "OLYMPUS OPTICAL CO.,LTD C2040Z": 6.4,
   "OLYMPUS OPTICAL CO.,LTD C211Z": 5.27,
   "OLYMPUS OPTICAL CO.,LTD C2Z,D520Z,C220Z": 4.54,