diff --git a/obj/recorder-cmd.pro b/obj/recorder-cmd.pro
index 2d95e37e4f3c0fc5139eb86d59d26b1aab60689a..b6ee423c9bd0820a67d0411c47797da4446354f3 100644
--- a/obj/recorder-cmd.pro
+++ b/obj/recorder-cmd.pro
@@ -3,22 +3,11 @@ TEMPLATE = app
 QT += core
 CONFIG += c++20 warn_on console
 
-SOURCES += \
-	../src/cmd/main.cpp \
-	../src/cmd/console.cpp \
-	../src/core.cpp \
-	../src/frameobserver.cpp \
-	../src/frameprocessor.cpp \
-	../src/camobserver.cpp \
-	../src/utils.cpp
-
-HEADERS += \
-	../src/cmd/console.h \
-	../src/core.h \
-	../src/frameobserver.h \
-	../src/frameprocessor.h \
-	../src/camobserver.h \
-	../src/utils.h
+SRC_DIR=../src
+SOURCES += 	$$SRC_DIR/cmd/*.cpp \
+				$$SRC_DIR/*.cpp
+HEADERS += 	$$SRC_DIR/cmd/*.h \
+				$$SRC_DIR/*.h
 
 DEFINES *= QT_USE_QSTRINGBUILDER		#converts + to % when building strings
 
@@ -40,7 +29,7 @@ QMAKE_CXXFLAGS += -Wno-deprecated-enum-enum-conversion # ignore opencv warnings.
 # cp ../b/vimbax/api/lib/libVmb{C,CPP,ImageTransform}.so $${VIMBA_LIB_DIR}
 
 TARGET = cmd
-DESTDIR = ../bin
+DEST_DIR = ../bin
 
-QMAKE_CLEAN += .cache/clangd/index/* .qmake.stash $${DESTDIR}/*jpg
+QMAKE_CLEAN += .cache/clangd/index/* .qmake.stash $${DEST_DIR}/*jpg
 #cant rm dir here, so added in sublime-project file
diff --git a/src/core.cpp b/src/core.cpp
index c98a194c4b90460657f30e6fa5566e90da188f87..d8ef3aceb967ced174941735f23c09d2cf63db44 100644
--- a/src/core.cpp
+++ b/src/core.cpp
@@ -29,10 +29,9 @@ Core::Core() :
 	// frames(FramePtrVector(QThread::idealThreadCount())),
 	pixelFormat("")
 {
-	QTimer::singleShot(0, this, SLOT(init())); //delayed init to allow connections to be established
+	QTimer::singleShot(0, this, SLOT(init())); //delayed init to allow connections to be established -> print/error signals!
 }
 
-
 void Core::init()
 {
 	if ( f(sys.Startup(), "init API") )
@@ -55,11 +54,6 @@ Core::~Core()
 	sys.Shutdown();
 }
 
-//2d
-// need to update open / closed states.
-//initially cams are closed, right? XXX how to find out?
-//XXX track states
-//VmbSystem::RegisterCameraListObserver
 void Core::listCams()
 {
 	if( !apiStarted )
@@ -68,7 +62,7 @@ void Core::listCams()
 	if ( f(sys.GetCameras( cameras ), "get cameras") )
 		return;
 
-	qDebug().noquote() << QString("found %1 camera(s)").arg(cameras.size());
+	emitPrint( QString("found %1 camera(s)").arg(cameras.size()));
 	if (cameras.size())
 	{
 		if( camIdx == -1UL || camIdx >= cameras.size() )
@@ -207,7 +201,6 @@ void Core::setCam(const int& newCamIdx)
 	Put frame into the frame queue
 	Start the acquisition engine ( curCam)
 
-	TODO use exceptions to not clutter error handling code here and catch em in main
 	TODO if( !curCam->isOpen() ) return; >> listener
 	2d get frameID
 */
@@ -237,7 +230,7 @@ void Core::startRecording()
 
 		g( curCam->StartCapture(), "start capture");
 
-		for( auto frame : frames )
+		for( auto& frame : frames )
 			g( curCam->QueueFrame(frame),"QueueFrame");
 
 		g( curCam->GetFeatureByName ("AcquisitionStart", pFeature ),"get AcquisitionStart");
diff --git a/src/core.h b/src/core.h
index a9a81e633b0bd9224881eb3da6efa4803ea56296..8607a0fda5fbc1116b71ca8e5c9e1d04b0af5904 100644
--- a/src/core.h
+++ b/src/core.h
@@ -7,12 +7,12 @@
 #include <VmbCPP/Interface.h>
 #include <VmbCPP/Camera.h>
 
-namespace VmbCPP {
-	class VmbSystem;
-}
+namespace VmbCPP { class VmbSystem; }
+using VmbCPP::VmbSystem;
 using VmbCPP::CameraPtr;
 using VmbCPP::FeaturePtr;
 using VmbCPP::FramePtrVector;
+using VmbCPP::CameraPtrVector;
 
 class Core : public QObject
 {
@@ -50,8 +50,8 @@ class Core : public QObject
 		void getCamInfo( const CameraPtr & );
 
 		bool apiStarted;
-		VmbCPP::VmbSystem& sys;
-		VmbCPP::CameraPtrVector cameras;
+		VmbSystem& sys;
+		CameraPtrVector cameras;
 		ulong camIdx;
 		CameraPtr curCam;
 
diff --git a/src/frameobserver.cpp b/src/frameobserver.cpp
index 9cfed68cb6319d9fc239a7de4dfd638dcd72a251..92177fbb64278e8becd37ece943126f604330bee 100644
--- a/src/frameobserver.cpp
+++ b/src/frameobserver.cpp
@@ -4,7 +4,6 @@
 #include <VmbCPP/SharedPointerDefines.h>
 #include <VmbCPP/Camera.h>
 
-// #include "qnamespace.h"
 #include <QDebug>
 #include <QThread>
 #include <QObject>