diff --git a/lib/application.dart b/lib/application.dart
index b68b8ca..855f3cf 100644
--- a/lib/application.dart
+++ b/lib/application.dart
@@ -6,6 +6,7 @@ import 'package:lightmeter/data/models/ev_source_type.dart';
 import 'package:provider/provider.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
+import 'data/light_sensor_service.dart';
 import 'data/permissions_service.dart';
 import 'data/shared_prefs_service.dart';
 import 'environment.dart';
@@ -35,6 +36,7 @@ class Application extends StatelessWidget {
               Provider(create: (_) => UserPreferencesService(snapshot.data!)),
               Provider(create: (_) => const HapticsService()),
               Provider(create: (_) => PermissionsService()),
+              Provider(create: (_) => const LightSensorService()),
             ],
             child: StopTypeProvider(
               child: ThemeProvider(
diff --git a/lib/data/light_sensor_service.dart b/lib/data/light_sensor_service.dart
new file mode 100644
index 0000000..2eadebd
--- /dev/null
+++ b/lib/data/light_sensor_service.dart
@@ -0,0 +1,9 @@
+import 'package:light_sensor/light_sensor.dart';
+
+class LightSensorService {
+  const LightSensorService();
+
+  Future<bool> hasSensor() async => await LightSensor.hasSensor ?? false;
+
+  Stream<int> luxStream() => LightSensor.lightSensorStream;
+}
diff --git a/lib/interactors/metering_interactor.dart b/lib/interactors/metering_interactor.dart
index 6a58905..3536aa5 100644
--- a/lib/interactors/metering_interactor.dart
+++ b/lib/interactors/metering_interactor.dart
@@ -1,13 +1,18 @@
+import 'dart:io';
+
 import 'package:lightmeter/data/haptics_service.dart';
+import 'package:lightmeter/data/light_sensor_service.dart';
 import 'package:lightmeter/data/shared_prefs_service.dart';
 
 class MeteringInteractor {
   final UserPreferencesService _userPreferencesService;
   final HapticsService _hapticsService;
+  final LightSensorService _lightSensorService;
 
   const MeteringInteractor(
     this._userPreferencesService,
     this._hapticsService,
+    this._lightSensorService,
   );
 
   double get cameraEvCalibration => _userPreferencesService.cameraEvCalibration;
@@ -25,4 +30,14 @@ class MeteringInteractor {
   }
 
   void enableHaptics(bool enable) => _userPreferencesService.haptics = enable;
+
+  Future<bool> hasAmbientLightSensor() async {
+    if (Platform.isAndroid) {
+      return _lightSensorService.hasSensor();
+    } else {
+      return false;
+    }
+  }
+
+  Stream<int> luxStream() => _lightSensorService.luxStream();
 }
diff --git a/lib/screens/metering/ev_source/light_sensor/bloc_light_sensor.dart b/lib/screens/metering/ev_source/light_sensor/bloc_light_sensor.dart
new file mode 100644
index 0000000..0592223
--- /dev/null
+++ b/lib/screens/metering/ev_source/light_sensor/bloc_light_sensor.dart
@@ -0,0 +1,45 @@
+import 'dart:async';
+import 'package:lightmeter/interactors/metering_interactor.dart';
+import 'package:lightmeter/screens/metering/ev_source/ev_source_bloc.dart';
+import 'package:lightmeter/screens/metering/communication/bloc_communication_metering.dart';
+import 'package:lightmeter/screens/metering/communication/event_communication_metering.dart'
+    as communication_event;
+import 'package:lightmeter/screens/metering/communication/state_communication_metering.dart'
+    as communication_states;
+import 'package:lightmeter/utils/log_2.dart';
+
+import 'event_light_sensor.dart';
+import 'state_light_sensor.dart';
+
+class LightSensorBloc extends EvSourceBloc<LightSensorEvent, LightSensorState> {
+  final MeteringInteractor _meteringInteractor;
+
+  StreamSubscription<int>? _luxSubscriptions;
+
+  LightSensorBloc(
+    MeteringCommunicationBloc communicationBloc,
+    this._meteringInteractor,
+  ) : super(
+          communicationBloc,
+          const LightSensorInitState(),
+        );
+
+  @override
+  void onCommunicationState(communication_states.SourceState communicationState) {
+    if (communicationState is communication_states.MeasureState) {
+      if (_luxSubscriptions == null) {
+        _luxSubscriptions = _meteringInteractor.luxStream().listen((event) {
+          communicationBloc.add(communication_event.MeasuredEvent(log2(event.toDouble() / 2.5)));
+        });
+      } else {
+        _luxSubscriptions?.cancel().then((_) => _luxSubscriptions = null);
+      }
+    }
+  }
+
+  @override
+  Future<void> close() async {
+    _luxSubscriptions?.cancel().then((_) => _luxSubscriptions = null);
+    return super.close();
+  }
+}
diff --git a/lib/screens/metering/ev_source/light_sensor/event_light_sensor.dart b/lib/screens/metering/ev_source/light_sensor/event_light_sensor.dart
new file mode 100644
index 0000000..bfbe89b
--- /dev/null
+++ b/lib/screens/metering/ev_source/light_sensor/event_light_sensor.dart
@@ -0,0 +1,3 @@
+abstract class LightSensorEvent {
+  const LightSensorEvent();
+}
diff --git a/lib/screens/metering/ev_source/light_sensor/state_light_sensor.dart b/lib/screens/metering/ev_source/light_sensor/state_light_sensor.dart
new file mode 100644
index 0000000..ee76c8f
--- /dev/null
+++ b/lib/screens/metering/ev_source/light_sensor/state_light_sensor.dart
@@ -0,0 +1,7 @@
+abstract class LightSensorState {
+  const LightSensorState();
+}
+
+class LightSensorInitState extends LightSensorState {
+  const LightSensorInitState();
+}
diff --git a/lib/screens/metering/ev_source/random_ev/bloc_random_ev.dart b/lib/screens/metering/ev_source/random_ev/bloc_random_ev.dart
deleted file mode 100644
index 1d72bed..0000000
--- a/lib/screens/metering/ev_source/random_ev/bloc_random_ev.dart
+++ /dev/null
@@ -1,27 +0,0 @@
-import 'dart:math';
-import 'package:lightmeter/screens/metering/ev_source/ev_source_bloc.dart';
-import 'package:lightmeter/screens/metering/communication/bloc_communication_metering.dart';
-import 'package:lightmeter/screens/metering/communication/event_communication_metering.dart'
-    as communication_event;
-import 'package:lightmeter/screens/metering/communication/state_communication_metering.dart'
-    as communication_states;
-
-import 'event_random_ev.dart';
-import 'state_random_ev.dart';
-
-class RandomEvBloc extends EvSourceBloc<RandomEvEvent, RandomEvState> {
-  final random = Random();
-
-  RandomEvBloc(MeteringCommunicationBloc communicationBloc)
-      : super(
-          communicationBloc,
-          RandomEvState(Random().nextDouble() * 15),
-        );
-
-  @override
-  void onCommunicationState(communication_states.SourceState communicationState) {
-    if (communicationState is communication_states.MeasureState) {
-      communicationBloc.add(communication_event.MeasuredEvent(random.nextDouble() * 15));
-    }
-  }
-}
diff --git a/lib/screens/metering/ev_source/random_ev/event_random_ev.dart b/lib/screens/metering/ev_source/random_ev/event_random_ev.dart
deleted file mode 100644
index 61e5e54..0000000
--- a/lib/screens/metering/ev_source/random_ev/event_random_ev.dart
+++ /dev/null
@@ -1,3 +0,0 @@
-abstract class RandomEvEvent {
-  const RandomEvEvent();
-}
diff --git a/lib/screens/metering/ev_source/random_ev/state_random_ev.dart b/lib/screens/metering/ev_source/random_ev/state_random_ev.dart
deleted file mode 100644
index 1bbec89..0000000
--- a/lib/screens/metering/ev_source/random_ev/state_random_ev.dart
+++ /dev/null
@@ -1,5 +0,0 @@
-class RandomEvState {
-  final double ev;
-
-  const RandomEvState(this.ev);
-}
diff --git a/lib/screens/metering/flow_metering.dart b/lib/screens/metering/flow_metering.dart
index 5204301..fa785d6 100644
--- a/lib/screens/metering/flow_metering.dart
+++ b/lib/screens/metering/flow_metering.dart
@@ -1,14 +1,15 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:lightmeter/data/haptics_service.dart';
+import 'package:lightmeter/data/light_sensor_service.dart';
 import 'package:lightmeter/data/models/ev_source_type.dart';
 import 'package:lightmeter/data/models/photography_values/photography_value.dart';
 import 'package:lightmeter/data/shared_prefs_service.dart';
 import 'package:lightmeter/interactors/metering_interactor.dart';
+import 'package:lightmeter/screens/metering/ev_source/light_sensor/bloc_light_sensor.dart';
 import 'package:provider/provider.dart';
 
 import 'ev_source/camera/bloc_camera.dart';
-import 'ev_source/random_ev/bloc_random_ev.dart';
 import 'bloc_metering.dart';
 import 'communication/bloc_communication_metering.dart';
 import 'screen_metering.dart';
@@ -18,10 +19,12 @@ class MeteringFlow extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final sourceType = context.watch<EvSourceType>();
     return Provider(
       create: (context) => MeteringInteractor(
         context.read<UserPreferencesService>(),
         context.read<HapticsService>(),
+        context.read<LightSensorService>(),
       ),
       child: MultiBlocProvider(
         providers: [
@@ -34,16 +37,19 @@ class MeteringFlow extends StatelessWidget {
               context.read<StopType>(),
             ),
           ),
-          BlocProvider(
-            create: (context) => CameraBloc(
-              context.read<MeteringCommunicationBloc>(),
-              context.read<MeteringInteractor>(),
-            ),
-          ),
-          if (context.read<EvSourceType>() == EvSourceType.sensor)
+          if (sourceType == EvSourceType.camera)
             BlocProvider(
-              lazy: false,
-              create: (context) => RandomEvBloc(context.read<MeteringCommunicationBloc>()),
+              create: (context) => CameraBloc(
+                context.read<MeteringCommunicationBloc>(),
+                context.read<MeteringInteractor>(),
+              ),
+            ),
+          if (sourceType == EvSourceType.sensor)
+            BlocProvider(
+              create: (context) => LightSensorBloc(
+                context.read<MeteringCommunicationBloc>(),
+                context.read<MeteringInteractor>(),
+              ),
             ),
         ],
         child: const MeteringScreen(),
diff --git a/pubspec.yaml b/pubspec.yaml
index e5f51f3..9de9f32 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -17,6 +17,7 @@ dependencies:
     sdk: flutter
   intl: 0.17.0
   intl_utils: 2.8.1
+  light_sensor: 2.0.2
   material_color_utilities: 0.2.0
   package_info_plus: 3.0.2
   permission_handler: 10.2.0