diff --git a/src/ipa/raspberrypi/cam_helper.cpp b/src/ipa/raspberrypi/cam_helper.cpp
index 09917f3c..71ea21ff 100644
--- a/src/ipa/raspberrypi/cam_helper.cpp
+++ b/src/ipa/raspberrypi/cam_helper.cpp
@@ -128,6 +128,11 @@ bool CamHelper::SensorEmbeddedDataPresent() const
 	return false;
 }
 
+double CamHelper::Sensitivity() const
+{
+	return mode_.sensitivity;
+}
+
 unsigned int CamHelper::HideFramesStartup() const
 {
 	/*
diff --git a/src/ipa/raspberrypi/cam_helper.hpp b/src/ipa/raspberrypi/cam_helper.hpp
index a52f3f0b..14c4714c 100644
--- a/src/ipa/raspberrypi/cam_helper.hpp
+++ b/src/ipa/raspberrypi/cam_helper.hpp
@@ -39,6 +39,8 @@ namespace RPiController {
 //
 // A method to query if the sensor outputs embedded data that can be parsed.
 //
+// A method to return the sensitivity of the current camera mode.
+//
 // A parser to parse the embedded data buffers provided by some sensors (for
 // example, the imx219 does; the ov5647 doesn't). This allows us to know for
 // sure the exposure and gain of the frame we're looking at. CamHelper
@@ -81,6 +83,7 @@ public:
 	virtual void GetDelays(int &exposure_delay, int &gain_delay,
 			       int &vblank_delay) const;
 	virtual bool SensorEmbeddedDataPresent() const;
+	virtual double Sensitivity() const;
 	virtual unsigned int HideFramesStartup() const;
 	virtual unsigned int HideFramesModeSwitch() const;
 	virtual unsigned int MistrustFramesStartup() const;
diff --git a/src/ipa/raspberrypi/controller/camera_mode.h b/src/ipa/raspberrypi/controller/camera_mode.h
index 256438c9..326f4f20 100644
--- a/src/ipa/raspberrypi/controller/camera_mode.h
+++ b/src/ipa/raspberrypi/controller/camera_mode.h
@@ -39,6 +39,8 @@ struct CameraMode {
 	libcamera::Transform transform;
 	// minimum and maximum fame lengths in units of lines
 	uint32_t min_frame_length, max_frame_length;
+	// sensitivity of this mode
+	double sensitivity;
 };
 
 #ifdef __cplusplus
diff --git a/src/ipa/raspberrypi/raspberrypi.cpp b/src/ipa/raspberrypi/raspberrypi.cpp
index e5bb8159..da42d279 100644
--- a/src/ipa/raspberrypi/raspberrypi.cpp
+++ b/src/ipa/raspberrypi/raspberrypi.cpp
@@ -321,6 +321,12 @@ void IPARPi::setMode(const IPACameraSensorInfo &sensorInfo)
 	 */
 	mode_.min_frame_length = sensorInfo.minFrameLength;
 	mode_.max_frame_length = sensorInfo.maxFrameLength;
+
+	/*
+	 * For now, initialise the mode sensitivity to the usual value of 1.
+	 * \todo Obtain the correct sensitivity number automatically.
+	 */
+	mode_.sensitivity = 1.0;
 }
 
 int IPARPi::configure(const IPACameraSensorInfo &sensorInfo,
@@ -379,6 +385,12 @@ int IPARPi::configure(const IPACameraSensorInfo &sensorInfo,
 	/* Pass the camera mode to the CamHelper to setup algorithms. */
 	helper_->SetCameraMode(mode_);
 
+	/*
+	 * For now, the CamHelper knows the sensitivity correctly.
+	 * \todo This can be removed once the sensitivity is initialised properly.
+	 */
+	mode_.sensitivity = helper_->Sensitivity();
+
 	if (firstStart_) {
 		/* Supply initial values for frame durations. */
 		applyFrameDurations(defaultMinFrameDuration, defaultMaxFrameDuration);