diff --git a/Ink Canvas/Helpers/CameraService.cs b/Ink Canvas/Helpers/CameraService.cs
index 9b76c4d0..fbc4e67b 100644
--- a/Ink Canvas/Helpers/CameraService.cs	
+++ b/Ink Canvas/Helpers/CameraService.cs	
@@ -40,13 +40,13 @@ namespace Ink_Canvas.Helpers
         public int ResolutionWidth
         {
             get => _resolutionWidth;
-            set => _resolutionWidth = Math.Max(320, Math.Min(1920, value));
+            set => _resolutionWidth = Math.Max(320, Math.Min(3840, value));
         }
 
         public int ResolutionHeight
         {
             get => _resolutionHeight;
-            set => _resolutionHeight = Math.Max(240, Math.Min(1080, value));
+            set => _resolutionHeight = Math.Max(240, Math.Min(2160, value));
         }
 
         public CameraService()
diff --git a/Ink Canvas/MainWindow.xaml b/Ink Canvas/MainWindow.xaml
index c8c79183..8333e25e 100644
--- a/Ink Canvas/MainWindow.xaml	
+++ b/Ink Canvas/MainWindow.xaml	
@@ -10683,7 +10683,7 @@
                     <Grid Grid.Row="1" HorizontalAlignment="Center" Margin="10,6,10,4">
                         <Border Background="{DynamicResource FloatBarBackground}" 
                                 CornerRadius="8" BorderThickness="1" BorderBrush="#616161"
-                                Width="280" Height="40" ToolTip="展台/截图分辨率">
+                                Width="282" Height="40" ToolTip="展台/截图分辨率">
                             <Grid>
                                 <Border x:Name="BoothResolutionTabIndicator" 
                                         Background="#66CCFF" 
diff --git a/Ink Canvas/MainWindow.xaml.cs b/Ink Canvas/MainWindow.xaml.cs
index 6d7bf0ce..cb7abc56 100644
--- a/Ink Canvas/MainWindow.xaml.cs	
+++ b/Ink Canvas/MainWindow.xaml.cs	
@@ -3396,6 +3396,7 @@ namespace Ink_Canvas
                     _boothResolutionWidth = w;
                     _boothResolutionHeight = h;
                     UpdateBoothResolutionTabState();
+                    SyncBoothResolutionToCameraService();
                 }
             }
         }
diff --git a/Ink Canvas/MainWindow_cs/MW_VideoPresenter.cs b/Ink Canvas/MainWindow_cs/MW_VideoPresenter.cs
index 8e33c0db..ccb3cdc7 100644
--- a/Ink Canvas/MainWindow_cs/MW_VideoPresenter.cs	
+++ b/Ink Canvas/MainWindow_cs/MW_VideoPresenter.cs	
@@ -20,7 +20,7 @@ namespace Ink_Canvas
 {
     public partial class MainWindow : Window
     {
-        private static readonly SolidColorBrush BoothButtonHighlightBrush = new SolidColorBrush((System.Windows.Media.Color)System.Windows.Media.ColorConverter.ConvertFromString("#66CCFF"));
+        private static readonly SolidColorBrush BoothButtonHighlightBrush = new SolidColorBrush((System.Windows.Media.Color)System.Windows.Media.ColorConverter.ConvertFromString("#FF66CCFF"));
         private bool _boothButtonPressHandlersAttached;
 
         // 标记：用于在保存/恢复白板内容时排除“展台实时上屏”画面
@@ -153,6 +153,14 @@ namespace Ink_Canvas
             _cameraService = new CameraService();
             _cameraService.FrameReceived += CameraService_FrameReceived;
             _cameraService.ErrorOccurred += CameraService_ErrorOccurred;
+            SyncBoothResolutionToCameraService();
+        }
+
+        internal void SyncBoothResolutionToCameraService()
+        {
+            if (_cameraService == null) return;
+            _cameraService.ResolutionWidth = BoothResolutionWidth;
+            _cameraService.ResolutionHeight = BoothResolutionHeight;
         }
 
         /// <summary>