diff --git a/example/RefractiveIndex.cpp b/example/RefractiveIndex.cpp
index 57df9c2..b8090c2 100644
--- a/example/RefractiveIndex.cpp
+++ b/example/RefractiveIndex.cpp
@@ -189,13 +189,15 @@ void RefractiveIndex::state_analysis()
 void RefractiveIndex::update()
 {
     state_analysis();
-    
+    /*
     RefractiveIndex::_vidGrabber.grabFrame();  // get a new frame from the camera
 
     if (_vidGrabber.isFrameNew())
     {
         _pixels = _vidGrabber.getPixelsRef(); //get ofPixels from the camera
     }
+     */
+    
 }
 
 void RefractiveIndex::draw()
@@ -213,7 +215,8 @@ void RefractiveIndex::setup_camera()
         ofLog(OF_LOG_ERROR) << "RefractiveIndex::setup_camera - could not initialise grabber";
         return;
     }
-    
+
+    _vidGrabber.setUseTexture(false);
     _vidGrabber.listDevices();
 	_vidGrabber.setVerbose(true);
     _vid_stream_open = true;
diff --git a/src/CamNoiseAnalysis.cpp b/src/CamNoiseAnalysis.cpp
index c6f9584..d561d1a 100755
--- a/src/CamNoiseAnalysis.cpp
+++ b/src/CamNoiseAnalysis.cpp
@@ -240,8 +240,14 @@ void CamNoiseAnalysis::draw()
 // this runs at save_cb timer rate = DELTA_T_SAVE
 void CamNoiseAnalysis::save_cb(Timer& timer)
 {
-  
     _save_cnt++;
+
+    RefractiveIndex::_vidGrabber.grabFrame();  // get a new frame from the camera
+    
+    if (RefractiveIndex::_vidGrabber.isFrameNew())
+    {
+        RefractiveIndex::_pixels = RefractiveIndex::_vidGrabber.getPixelsRef(); //get ofPixels from the camera
+    }
     
     cout << "CamNoiseAnalysis::saving...\n";
     
diff --git a/src/ColorMultiAnalysis.cpp b/src/ColorMultiAnalysis.cpp
index de3ba4d..50e645e 100755
--- a/src/ColorMultiAnalysis.cpp
+++ b/src/ColorMultiAnalysis.cpp
@@ -235,6 +235,13 @@ void ColorMultiAnalysis::save_cb(Timer& timer)
   
     _save_cnt++;
     
+    RefractiveIndex::_vidGrabber.grabFrame();  // get a new frame from the camera
+    
+    if (RefractiveIndex::_vidGrabber.isFrameNew())
+    {
+        RefractiveIndex::_pixels = RefractiveIndex::_vidGrabber.getPixelsRef(); //get ofPixels from the camera
+    }
+    
     cout << "ColorMultiAnalysis::saving...\n";
     
     string file_name = ofToString(_save_cnt,2)+"_"+ofToString(c,2)+"_"+ofToString(_run_cnt,2)+".jpg";
diff --git a/src/ColorSingleAnalysis.cpp b/src/ColorSingleAnalysis.cpp
index 2756d81..6716def 100755
--- a/src/ColorSingleAnalysis.cpp
+++ b/src/ColorSingleAnalysis.cpp
@@ -249,6 +249,13 @@ void ColorSingleAnalysis::save_cb(Timer& timer)
 {
     _save_cnt++;
     
+    RefractiveIndex::_vidGrabber.grabFrame();  // get a new frame from the camera
+    
+    if (RefractiveIndex::_vidGrabber.isFrameNew())
+    {
+        RefractiveIndex::_pixels = RefractiveIndex::_vidGrabber.getPixelsRef(); //get ofPixels from the camera
+    }
+    
     cout << "ColorSingleAnalysis::saving...\n";
     
     string file_name =ofToString(_save_cnt,2)+"_"+fileNameTag+"_"+ofToString(_run_cnt,2)+".jpg";
diff --git a/src/DiffNoiseAnalysis.cpp b/src/DiffNoiseAnalysis.cpp
index 6932280..7b3681c 100755
--- a/src/DiffNoiseAnalysis.cpp
+++ b/src/DiffNoiseAnalysis.cpp
@@ -254,6 +254,13 @@ void DiffNoiseAnalysis::save_cb(Timer& timer)
 {
     _save_cnt++;
     
+    RefractiveIndex::_vidGrabber.grabFrame();  // get a new frame from the camera
+    
+    if (RefractiveIndex::_vidGrabber.isFrameNew())
+    {
+        RefractiveIndex::_pixels = RefractiveIndex::_vidGrabber.getPixelsRef(); //get ofPixels from the camera
+    }
+    
     cout << "DiffNoiseAnalysis::saving...\n";
     
     string file_name = ofToString(_save_cnt,2)+"_"+ ofToString(c,2)+"_"+ofToString(_run_cnt,2)+".jpg";
diff --git a/src/RelaxRateAnalysis.cpp b/src/RelaxRateAnalysis.cpp
index d8d0254..86964f2 100755
--- a/src/RelaxRateAnalysis.cpp
+++ b/src/RelaxRateAnalysis.cpp
@@ -220,6 +220,13 @@ void RelaxRateAnalysis::save_cb(Timer& timer)
 {
     _save_cnt++;
     
+    RefractiveIndex::_vidGrabber.grabFrame();  // get a new frame from the camera
+    
+    if (RefractiveIndex::_vidGrabber.isFrameNew())
+    {
+        RefractiveIndex::_pixels = RefractiveIndex::_vidGrabber.getPixelsRef(); //get ofPixels from the camera
+    }
+    
     cout << "RelaxRateAnalysis::saving...\n";
     
     string file_name = ofToString(_save_cnt,2)+"_"+ ofToString(c,2)+"_"+ofToString(_run_cnt,2)+".jpg";
diff --git a/src/ShadowScapesAnalysis.cpp b/src/ShadowScapesAnalysis.cpp
index ba28e0a..19b09df 100755
--- a/src/ShadowScapesAnalysis.cpp
+++ b/src/ShadowScapesAnalysis.cpp
@@ -271,6 +271,14 @@ void ShadowScapesAnalysis::save_cb(Timer& timer)
     
     _save_cnt++;
     
+    RefractiveIndex::_vidGrabber.grabFrame();  // get a new frame from the camera
+    
+    if (RefractiveIndex::_vidGrabber.isFrameNew())
+    {
+        RefractiveIndex::_pixels = RefractiveIndex::_vidGrabber.getPixelsRef(); //get ofPixels from the camera
+    }
+    
+    
     cout << "ShadowScapesAnalysis::saving...\n";
     
     string file_name;
diff --git a/src/ShapeFromShadingAnalysis.cpp b/src/ShapeFromShadingAnalysis.cpp
index 8dc57b6..6749a7f 100755
--- a/src/ShapeFromShadingAnalysis.cpp
+++ b/src/ShapeFromShadingAnalysis.cpp
@@ -427,6 +427,13 @@ void ShapeFromShadingAnalysis::draw()
 void ShapeFromShadingAnalysis::save_cb(Timer& timer)
 {
     _save_cnt++;
+        
+    RefractiveIndex::_vidGrabber.grabFrame();  // get a new frame from the camera
+    
+    if (RefractiveIndex::_vidGrabber.isFrameNew())
+    {
+        RefractiveIndex::_pixels = RefractiveIndex::_vidGrabber.getPixelsRef(); //get ofPixels from the camera
+    }
     
     cout << "ShapeFromShadingAnalysis::saving...\n";
     
diff --git a/src/StrobeAnalysis.cpp b/src/StrobeAnalysis.cpp
index db05c0a..0f887bb 100755
--- a/src/StrobeAnalysis.cpp
+++ b/src/StrobeAnalysis.cpp
@@ -235,9 +235,15 @@ void StrobeAnalysis::draw()
 // this runs at save_cb timer rate = DELTA_T_SAVE
 void StrobeAnalysis::save_cb(Timer& timer)
 {
-
     _save_cnt++;
     
+    RefractiveIndex::_vidGrabber.grabFrame();  // get a new frame from the camera
+    
+    if (RefractiveIndex::_vidGrabber.isFrameNew())
+    {
+        RefractiveIndex::_pixels = RefractiveIndex::_vidGrabber.getPixelsRef(); //get ofPixels from the camera
+    }
+    
     cout << "StrobeAnalysis::saving...\n";
     
     string file_name = ofToString(_save_cnt,2)+"_"+ ofToString(_strobe_on) +"_"+ofToString(_run_cnt,2)+".jpg";