diff --git a/CHANGELOG.md b/CHANGELOG.md
index 96a0de4..dca3889 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,10 @@ Activate / deactivate layer opaticty according to prefix
 Activate / deactivate all masks using MA layers
 -->
 
+0.3.4:
+
+feat: swap cams button, code copied from `bg_plane_manager`
+
 0.3.3:
 
 fix: norm name : lowercase first (else bad naming break prefix)
diff --git a/OP_scene_switch.py b/OP_scene_switch.py
index 99f8dc1..2ff5af9 100644
--- a/OP_scene_switch.py
+++ b/OP_scene_switch.py
@@ -1,6 +1,5 @@
 import bpy
 
-
 class GPEXP_OT_render_scene_switch(bpy.types.Operator):
     bl_idname = "gp.render_scene_switch"
     bl_label = "Render Scene Switch"
@@ -37,8 +36,83 @@ class GPEXP_OT_render_scene_switch(bpy.types.Operator):
         bpy.context.window.scene = scn
         return {"FINISHED"}
 
+def set_resolution_from_cam_prop(cam=None):
+    if not cam:
+        cam = bpy.context.scene.camera
+    if not cam:
+        return ('ERROR', 'No active camera')
+
+    res = cam.get('resolution')
+    if not res:
+        return ('ERROR', 'Cam has no resolution attribute')
+
+    rd = bpy.context.scene.render
+    if rd.resolution_x == res[0] and rd.resolution_y == res[1]:
+        return ('INFO', f'Resolution already at {res[0]}x{res[1]}')
+    else:
+        rd.resolution_x, rd.resolution_y = res[0], res[1]
+        return ('INFO', f'Resolution to {res[0]}x{res[1]}')
+
+class GPEXP_OT_swap_render_cams(bpy.types.Operator):
+    bl_idname = "gp.swap_render_cams"
+    bl_label = "Swap Cameras"
+    bl_description = "Toggle between anim and bg cam"
+    bl_options = {"REGISTER"}
+
+    @classmethod
+    def poll(cls, context):
+        return True
+
+    def execute(self, context):
+        anim_cam = bpy.context.scene.objects.get('anim_cam')
+        bg_cam = bpy.context.scene.objects.get('bg_cam')
+
+        if not anim_cam or not bg_cam:
+            self.report({'ERROR'}, 'anim_cam or bg_cam is missing')
+            return {"CANCELLED"}
+        
+        cam = context.scene.camera
+        if not cam:
+            context.scene.camera = anim_cam
+            set_resolution_from_cam_prop()
+            return {"FINISHED"}
+        
+
+        in_draw = False
+        if cam.parent and cam.name in ('draw_cam', 'action_cam'):
+            if cam.name == 'draw_cam':
+                draw_cam = cam
+                in_draw = True
+            cam = cam.parent
+
+        ## swap
+        # context.scene.camera = bg_cam if cam is anim_cam else anim_cam
+        if cam is anim_cam:
+            main = context.scene.camera = bg_cam
+            anim_cam.hide_viewport = True
+            bg_cam.hide_viewport = False
+        else:
+            main = context.scene.camera = anim_cam
+            anim_cam.hide_viewport = False
+            bg_cam.hide_viewport = True
+
+        if in_draw:
+            draw_cam.parent = main
+            draw_cam.data = main.data
+            # back in draw_cam
+            context.scene.camera = draw_cam
+            bg_cam.hide_viewport = anim_cam.hide_viewport = True
+
+        # set res
+        ret = set_resolution_from_cam_prop(main)
+        if ret:
+            self.report({ret[0]}, ret[1])
+        
+        return {"FINISHED"}
+
 classes=(
 GPEXP_OT_render_scene_switch,
+GPEXP_OT_swap_render_cams,
 )
 
 def register(): 
diff --git a/__init__.py b/__init__.py
index 0b9c543..0437efc 100644
--- a/__init__.py
+++ b/__init__.py
@@ -2,7 +2,7 @@ bl_info = {
     "name": "GP Render",
     "description": "Organise export of gp layers through compositor output",
     "author": "Samuel Bernou",
-    "version": (0, 3, 3),
+    "version": (0, 3, 4),
     "blender": (2, 93, 0),
     "location": "View3D",
     "warning": "",
diff --git a/ui.py b/ui.py
index 368267b..6be032d 100644
--- a/ui.py
+++ b/ui.py
@@ -15,8 +15,22 @@ class GPEXP_PT_gp_node_ui(Panel):
         layout = self.layout
         layout.operator('gp.render_scene_switch', icon='SCENE_DATA', text='Switch Scene')
         
-        if not context.scene.use_nodes or not context.scene.node_tree:
+        scn = context.scene
+        if not scn.use_nodes or not scn.node_tree:
             return
+        
+        ## Camera swapping
+        row = layout.row()
+        cam = scn.camera
+        if cam:
+            text = f'{cam.name} : {scn.render.resolution_x}x{scn.render.resolution_y}' # Cam: 
+        else:
+            text = f'None' # Cam: 
+
+        layout.separator()
+        # if cam and cam_name == 'draw_cam':
+        #     cam_name = f'{cam.parent.name} > {cam_name}'
+        row.operator("gp.swap_render_cams", text=text, icon='OUTLINER_OB_CAMERA')
 
         # TODO : add advanced bool checkbox to hide some options from the user