diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index f0ef9ae9ac..b7972d0f38 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -5,6 +5,12 @@ Started 2007-June-11
 Please add newer entries at the top, list the date and your name with
 email address.
 
+2009-Feb-4 UPDATE Vesa Solonen <vesa.solonen@hut.fi>
+================================================================================
+++pcbnew:
+++eeschema:
+    Zoom factors in 3th root series of 2. So two intermediates between half/double scale.
+
 2009-Feb-04 UPDATE Wayne Stambaugh <stambaughw@verizon.net>
 ================================================================================
 ++All
diff --git a/eeschema/class_screen.cpp b/eeschema/class_screen.cpp
index f82cf52a46..8b47894aa5 100644
--- a/eeschema/class_screen.cpp
+++ b/eeschema/class_screen.cpp
@@ -79,8 +79,8 @@ void SCH_ITEM::Place( WinEDA_SchematicFrame* frame, wxDC* DC )
 /* Class SCH_SCREEN: classe de gestion d'un affichage pour schematique */
 /***********************************************************************/
 
-/* Default EESchema zoom values. */
-static int SchematicZoomList[] = { 10, 15, 20, 40, 80, 160, 320, 640, 1280 };
+/* Default EESchema zoom values. 3th root of 2 series up to 32 */
+static int SchematicZoomList[] = { 10, 13, 16, 20, 25, 32, 40, 50, 63, 80, 101, 127, 160, 202, 254, 320, 640, 1280 };
 
 #define SCHEMATIC_ZOOM_LIST_CNT  ( sizeof( SchematicZoomList ) / \
                                    sizeof( int ) )
diff --git a/pcbnew/classpcb.cpp b/pcbnew/classpcb.cpp
index b0ab1fdf4f..a389b5176e 100644
--- a/pcbnew/classpcb.cpp
+++ b/pcbnew/classpcb.cpp
@@ -12,9 +12,9 @@
 #include "id.h"
 
 
-/* Default PCB zoom coefficients. */
-static const int PcbZoomList[] = { 5, 10, 15, 20, 40, 80, 160, 320, 640, 1280,
-                                   2560, 5120, 10240, 20480 };
+/* Default PCB zoom coefficients. 3th root of 2 series up to 256 */
+static const int PcbZoomList[] = { 5, 6, 8, 10, 13, 16, 20, 25, 32, 40, 50, 63, 80, 101, 127, 160, 202, 254, 320, 
+                                   403, 508, 640, 806, 1016, 1280, 1613, 2032, 2560, 5120, 10240, 20480 };
 
 #define PCB_ZOOM_LIST_CNT ( sizeof( PcbZoomList ) / sizeof( int ) )