diff --git a/corelib/src/CameraRGB.cpp b/corelib/src/CameraRGB.cpp
index 0b743606..850e1f42 100644
--- a/corelib/src/CameraRGB.cpp
+++ b/corelib/src/CameraRGB.cpp
@@ -219,12 +219,15 @@ bool CameraImages::init(const std::string & calibrationFolder, const std::string
 			const std::list<std::string> & filenames = _dir->getFileNames();
 			for(std::list<std::string>::const_iterator iter=filenames.begin(); iter!=filenames.end(); ++iter)
 			{
-				// format is 12234456.12334.png
+				// format is text_12234456.12334_text.png
 				std::list<std::string> list = uSplit(*iter, '.');
 				if(list.size() == 3)
 				{
 					list.pop_back(); // remove extension
-					double stamp = uStr2Double(uJoin(list, "."));
+					std::string decimals = uSplitNumChar(list.back()).front();
+					list.pop_back();
+					std::string sec = uSplitNumChar(list.back()).back();
+					double stamp = uStr2Double(sec + "." + decimals);
 					if(stamp > 0.0)
 					{
 						stamps_.push_back(stamp);
diff --git a/guilib/src/ui/createSimpleCalibrationDialog.ui b/guilib/src/ui/createSimpleCalibrationDialog.ui
index d2cf7c41..0cd76287 100644
--- a/guilib/src/ui/createSimpleCalibrationDialog.ui
+++ b/guilib/src/ui/createSimpleCalibrationDialog.ui
@@ -19,7 +19,7 @@
      <item row="0" column="0">
       <widget class="QDoubleSpinBox" name="doubleSpinBox_fx">
        <property name="decimals">
-        <number>4</number>
+        <number>6</number>
        </property>
        <property name="maximum">
         <double>99999.000000000000000</double>
@@ -36,7 +36,7 @@
      <item row="1" column="0">
       <widget class="QDoubleSpinBox" name="doubleSpinBox_fy">
        <property name="decimals">
-        <number>4</number>
+        <number>6</number>
        </property>
        <property name="maximum">
         <double>99999.000000000000000</double>
@@ -53,7 +53,7 @@
      <item row="2" column="0">
       <widget class="QDoubleSpinBox" name="doubleSpinBox_cx">
        <property name="decimals">
-        <number>4</number>
+        <number>6</number>
        </property>
        <property name="maximum">
         <double>99999.000000000000000</double>
@@ -70,7 +70,7 @@
      <item row="3" column="0">
       <widget class="QDoubleSpinBox" name="doubleSpinBox_cy">
        <property name="decimals">
-        <number>4</number>
+        <number>6</number>
        </property>
        <property name="maximum">
         <double>99999.000000000000000</double>
@@ -87,7 +87,7 @@
      <item row="4" column="0">
       <widget class="QDoubleSpinBox" name="doubleSpinBox_baseline">
        <property name="decimals">
-        <number>4</number>
+        <number>6</number>
        </property>
        <property name="minimum">
         <double>0.000000000000000</double>