diff --git a/app/SandboxSetup/beamerlocationgui.ui b/app/SandboxSetup/beamerlocationgui.ui
index 027254b69298298e5b245dbaaebf83f5b3e406f2..f1633ff61403ca4aa369b85117f713fa3b333e32 100644
--- a/app/SandboxSetup/beamerlocationgui.ui
+++ b/app/SandboxSetup/beamerlocationgui.ui
@@ -13,30 +13,55 @@
   <property name="windowTitle">
    <string>Dialog</string>
   </property>
-  <widget class="QLabel" name="lblInstructions">
+  <widget class="QPushButton" name="btnLock">
+   <property name="geometry">
+    <rect>
+     <x>220</x>
+     <y>300</y>
+     <width>89</width>
+     <height>25</height>
+    </rect>
+   </property>
+   <property name="text">
+    <string>Lock</string>
+   </property>
+  </widget>
+  <widget class="QLabel" name="label">
    <property name="geometry">
     <rect>
      <x>40</x>
      <y>40</y>
-     <width>121</width>
+     <width>201</width>
      <height>17</height>
     </rect>
    </property>
    <property name="text">
-    <string>Consignes :</string>
+    <string>Instructions :</string>
    </property>
   </widget>
-  <widget class="QPushButton" name="btnLock">
+  <widget class="QTextEdit" name="txtInstructions">
    <property name="geometry">
     <rect>
-     <x>220</x>
-     <y>260</y>
-     <width>89</width>
-     <height>25</height>
+     <x>60</x>
+     <y>70</y>
+     <width>421</width>
+     <height>181</height>
     </rect>
    </property>
-   <property name="text">
-    <string>Lock</string>
+   <property name="readOnly">
+    <bool>true</bool>
+   </property>
+   <property name="html">
+    <string>&lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 4.0//EN&quot; &quot;http://www.w3.org/TR/REC-html40/strict.dtd&quot;&gt;
+&lt;html&gt;&lt;head&gt;&lt;meta name=&quot;qrichtext&quot; content=&quot;1&quot; /&gt;&lt;style type=&quot;text/css&quot;&gt;
+p, li { white-space: pre-wrap; }
+&lt;/style&gt;&lt;/head&gt;&lt;body style=&quot; font-family:'Ubuntu'; font-size:11pt; font-weight:400; font-style:normal;&quot;&gt;
+&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;- A red corss is displayed from the selected output at step 2&lt;br /&gt;- Match the position of the cross with your white target&lt;/p&gt;
+&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;- When you are ready, press the button to validate a point&lt;/p&gt;
+&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;- Repeat this process 3 times for each cross you see (there will be 3 different crosses)&lt;/p&gt;
+&lt;p style=&quot;-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;br /&gt;&lt;/p&gt;
+&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;Note :&lt;/p&gt;
+&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;For each point you validate, change the height of your target to not save the same position twice in the process.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
    </property>
   </widget>
  </widget>
diff --git a/app/SandboxSetup/camerafocus.cpp b/app/SandboxSetup/camerafocus.cpp
index 48978fbdfb10dd10afe92efd710627e8fc586dfe..13730390e1f20086ccf31b84634d4446e5a42996 100644
--- a/app/SandboxSetup/camerafocus.cpp
+++ b/app/SandboxSetup/camerafocus.cpp
@@ -1,12 +1,14 @@
 #include "camerafocus.h"
 #include "ui_camerafocus.h"
 
-CameraFocus::CameraFocus(SandboxSetup *sandbox, QWidget *parent) :
+CameraFocus::CameraFocus(SandboxSetup *sandbox, MonitorGui *_mg, QWidget *parent) :
     SubApp("Camera focus", "Error", parent),
     ui(new Ui::CameraFocus)
 {
     ui->setupUi(this);
     setup = sandbox;
+    mg = _mg;
+    blackScreen = new QtFullScreen(mg->getResolution(), true, this);
 
     setup->loadFrameProcessProfil();
     initCameraParams();
@@ -17,17 +19,22 @@ CameraFocus::CameraFocus(SandboxSetup *sandbox, QWidget *parent) :
 CameraFocus::~CameraFocus()
 {
     delete frameTimer;
+    delete blackScreen;
     delete ui;
 }
 
 void CameraFocus::showEvent(QShowEvent *event){
     QWidget::showEvent(event);
+    cv::Mat black = cv::Mat(1, 1, CV_8UC3, cv::Scalar(0, 0, 0));
+    blackScreen->setGeometry(mg->getResolution());
+    blackScreen->imShow(black);
     frameTimer->start(100);
 }
 
 void CameraFocus::closeEvent(QCloseEvent *event){
 
     frameTimer->stop();
+    blackScreen->close();
     QWidget::closeEvent(event);
 }
 
diff --git a/app/SandboxSetup/camerafocus.h b/app/SandboxSetup/camerafocus.h
index e8937767d712209fbc21ac1cd4b0c5e2e304d643..e7effd2bebb1c2b5b71971595769719a9543749a 100644
--- a/app/SandboxSetup/camerafocus.h
+++ b/app/SandboxSetup/camerafocus.h
@@ -5,7 +5,8 @@
 #include <QTimer>
 #include <QAbstractButton>
 #include <sandboxSetup.h>
-
+#include "monitorgui.h"
+#include "qtfullscreen.h"
 #include "subapp.h"
 
 namespace Ui {
@@ -17,7 +18,7 @@ class CameraFocus : public SubApp
     Q_OBJECT
 
 public:
-    explicit CameraFocus(SandboxSetup *sandbox, QWidget *parent = 0);
+    explicit CameraFocus(SandboxSetup *sandbox, MonitorGui *_mg, QWidget *parent = 0);
     ~CameraFocus();
 
     void valideRoutine();
@@ -50,7 +51,9 @@ protected:
 private:
     Ui::CameraFocus *ui;
     SandboxSetup *setup;
+    MonitorGui *mg;
     QTimer *frameTimer;
+    QtFullScreen *blackScreen;
     FrameProcessProfil defaultProfil;
     bool displayConstrasts = false;
 
diff --git a/app/SandboxSetup/croppingmask.ui b/app/SandboxSetup/croppingmask.ui
index 51433397930d765661268c0153b0bfcec77ea784..6ebc1cf07c5f7251cc4233991f8b965a875b8e33 100644
--- a/app/SandboxSetup/croppingmask.ui
+++ b/app/SandboxSetup/croppingmask.ui
@@ -57,25 +57,8 @@
     </layout>
    </widget>
   </widget>
-  <widget class="QLabel" name="label">
-   <property name="geometry">
-    <rect>
-     <x>40</x>
-     <y>350</y>
-     <width>441</width>
-     <height>20</height>
-    </rect>
-   </property>
-   <property name="text">
-    <string>Note : Set your screens in mirror mode</string>
-   </property>
-   <property name="alignment">
-    <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
-   </property>
-  </widget>
   <zorder>frame</zorder>
   <zorder>btnTakePicture</zorder>
-  <zorder>label</zorder>
  </widget>
  <resources/>
  <connections/>
diff --git a/app/SandboxSetup/mainwindow.cpp b/app/SandboxSetup/mainwindow.cpp
index ba0806672ab7db6befc1c2b6aec9a5a724db36c4..408cfa77bf85684a8939047c0a37f760f84e3d95 100644
--- a/app/SandboxSetup/mainwindow.cpp
+++ b/app/SandboxSetup/mainwindow.cpp
@@ -15,7 +15,7 @@ MainWindow::MainWindow(QWidget *parent) :
     init = new InitCamera(setup);
     mg = new MonitorGui(setup);
     pg = new ProjectionGui(setup, mg);
-    cf = new CameraFocus(setup);
+    cf = new CameraFocus(setup, mg);
     cm = new CroppingMask(setup, mg);
     bl = new BeamerLocationGui(setup, mg);
     scfg = new SaveConfigGui(setup);
diff --git a/app/SandboxSetup/projectiongui.ui b/app/SandboxSetup/projectiongui.ui
index d1b18a162a937396fb461ab309769e0c0c3f8078..0deee7bc204a83ca880145b52675dd4017aa28e8 100644
--- a/app/SandboxSetup/projectiongui.ui
+++ b/app/SandboxSetup/projectiongui.ui
@@ -49,7 +49,7 @@
    <property name="geometry">
     <rect>
      <x>40</x>
-     <y>340</y>
+     <y>440</y>
      <width>331</width>
      <height>21</height>
     </rect>
@@ -83,17 +83,17 @@
   <widget class="QLabel" name="label">
    <property name="geometry">
     <rect>
-     <x>80</x>
-     <y>420</y>
-     <width>361</width>
+     <x>40</x>
+     <y>360</y>
+     <width>441</width>
      <height>61</height>
     </rect>
    </property>
    <property name="text">
-    <string>Project a blue screen on the previously selected output to setup your beamer</string>
+    <string>Project a blue screen on the previously selected output to help you setup your beamer manually</string>
    </property>
    <property name="alignment">
-    <set>Qt::AlignCenter</set>
+    <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignTop</set>
    </property>
    <property name="wordWrap">
     <bool>true</bool>