diff --git a/config/devices.properties b/config/devices.properties
index 73a3415..6974af5 100644
--- a/config/devices.properties
+++ b/config/devices.properties
@@ -3,4 +3,4 @@ robot_modbus=RobotModbus|127.0.0.1:502|||
 $dewar=ch.psi.pshell.modbus.ModbusTCP|PC12288:502|||
 $temperature=ch.psi.pshell.modbus.AnalogInput|dewar 0|||
 cam=ch.psi.pshell.epics.AreaDetector|MX-SAMCAM|||
-img=ch.psi.pshell.imaging.CameraSource|cam||-1000|
+img=ch.psi.pshell.imaging.CameraSource|cam||-500|