diff --git a/kabuki/sources/camera.py b/kabuki/sources/camera.py
index 33700df..b1009ac 100644
--- a/kabuki/sources/camera.py
+++ b/kabuki/sources/camera.py
@@ -22,7 +22,7 @@ class Camera(CachedSource, PVCollection):
             height = base + ":HEIGHT"
         )
         CachedSource.__init__(self, size=1)
-        self.pvs.image.auto_monitor = True
+        self.pvs.image.auto_monitor = True # auto-monitor is off by default for large arrays, callbacks are not triggered without auto-monitor
 
     def get(self):
         data = self.pvs.image.get()