diff --git a/apps/app_full.py b/apps/app_full.py
index 71aed9c2..272cf399 100755
--- a/apps/app_full.py
+++ b/apps/app_full.py
@@ -7,7 +7,7 @@
                              QLineEdit, QPushButton, QSlider, QSpinBox,
                              QTabWidget, QVBoxLayout, QWidget)
 
-from picamera2 import Picamera2
+from picamera2 import Picamera2, utils
 from picamera2.encoders import H264Encoder, Quality
 from picamera2.outputs import FfmpegOutput, FileOutput
 from picamera2.previews.qt import QGlPicamera2
@@ -92,7 +92,7 @@ def update_controls():
     global scaler_crop
 
     # Fix aspect ratio of the pan/zoom
-    full_img = picam2.camera_properties["ScalerCropMaximum"]
+    full_img = utils.convert_from_libcamera_type(picam2.camera_ctrl_info['ScalerCrop'][1].max)
     ar = full_img[2] / full_img[3]
     new_scaler_crop = list(scaler_crop)
     new_scaler_crop[3] = int(new_scaler_crop[2] / ar)
@@ -516,7 +516,7 @@ class panZoomDisplay(QWidget):
     def __init__(self):
         super().__init__()
         self.setMinimumSize(201, 151)
-        self.scale = 200 / picam2.camera_properties["ScalerCropMaximum"][2]
+        self.scale = 200 / utils.convert_from_libcamera_type(picam2.camera_ctrl_info['ScalerCrop'][1].max)[2]
         self.zoom_level_ = 1.0
         self.max_zoom = 7.0
         self.zoom_step = 0.1
@@ -537,7 +537,7 @@ def setZoomLevel(self, val):
     def paintEvent(self, event):
         painter = QPainter()
         painter.begin(self)
-        full_img = picam2.camera_properties["ScalerCropMaximum"]
+        full_img = utils.convert_from_libcamera_type(picam2.camera_ctrl_info['ScalerCrop'][1].max)
         self.scale = 200 / full_img[2]
         # Whole frame
         scaled_full_img = [int(i * self.scale) for i in full_img]
@@ -555,11 +555,11 @@ def paintEvent(self, event):
     def draw_centered(self, pos):
         global scaler_crop
         center = [int(i / self.scale) for i in pos]
-        full_img = picam2.camera_properties["ScalerCropMaximum"]
+        full_img = utils.convert_from_libcamera_type(picam2.camera_ctrl_info['ScalerCrop'][1].max)
         w = scaler_crop[2]
         h = scaler_crop[3]
-        x = center[0] - w // 2 + picam2.camera_properties["ScalerCropMaximum"][0]
-        y = center[1] - h // 2 + picam2.camera_properties["ScalerCropMaximum"][1]
+        x = center[0] - w // 2 + full_img[0]
+        y = center[1] - h // 2 + full_img[1]
         new_scaler_crop = [x, y, w, h]
 
         # Check still within bounds
@@ -583,7 +583,7 @@ def setZoom(self):
         if self.zoom_level > self.max_zoom:
             self.zoom_level = self.max_zoom
         factor = 1.0 / self.zoom_level
-        full_img = picam2.camera_properties["ScalerCropMaximum"]
+        full_img = utils.convert_from_libcamera_type(picam2.camera_ctrl_info['ScalerCrop'][1].max)
         current_center = (scaler_crop[0] + scaler_crop[2] // 2, scaler_crop[1] + scaler_crop[3] // 2)
         w = int(factor * full_img[2])
         h = int(factor * full_img[3])
@@ -1128,9 +1128,9 @@ def apply_settings(self):
         # Finally set the modes and check sensor crop
         if self.preview_check.isChecked():
             switch_config("still")
-            current_crop = picam2.camera_properties["ScalerCropMaximum"]
+            current_crop = utils.convert_from_libcamera_type(picam2.camera_ctrl_info['ScalerCrop'][1].max)
             switch_config("preview")
-            if current_crop != picam2.camera_properties["ScalerCropMaximum"]:
+            if current_crop != utils.convert_from_libcamera_type(picam2.camera_ctrl_info['ScalerCrop'][1].max):
                 print("Preview and Still configs have different aspect ratios")
                 self.preview_warning.show()
             else:
@@ -1208,7 +1208,7 @@ def toggle_hidden_controls():
 # Final setup
 window.setWindowTitle("Qt Picamera2 App")
 recording = False
-scaler_crop = picam2.camera_properties["ScalerCropMaximum"]
+scaler_crop = utils.convert_from_libcamera_type(picam2.camera_ctrl_info['ScalerCrop'][1].max)
 hdr_imgs = {"exposures": None}
 pic_tab.apply_settings()
 
diff --git a/picamera2/picamera2.py b/picamera2/picamera2.py
index 4677c2ac..f8f41137 100644
--- a/picamera2/picamera2.py
+++ b/picamera2/picamera2.py
@@ -499,7 +499,7 @@ def sensor_modes(self) -> list:
                 self.configure(temp_config)
                 frameDurationMin = self.camera_controls["FrameDurationLimits"][0]
                 cam_mode["fps"] = round(1e6 / frameDurationMin, 2)
-                cam_mode["crop_limits"] = self.camera_properties["ScalerCropMaximum"]
+                cam_mode["crop_limits"] = utils.convert_from_libcamera_type(self.camera_ctrl_info['ScalerCrop'][1].max)
                 cam_mode["exposure_limits"] = tuple([i for i in self.camera_controls["ExposureTime"] if i != 0])
                 self.sensor_modes_.append(cam_mode)
         return self.sensor_modes_
diff --git a/tests/autofocus_test.py b/tests/autofocus_test.py
index bc675295..6023b395 100755
--- a/tests/autofocus_test.py
+++ b/tests/autofocus_test.py
@@ -2,7 +2,7 @@
 
 from libcamera import controls
 
-from picamera2 import Picamera2
+from picamera2 import Picamera2, utils
 
 picam2 = Picamera2()
 if 'AfMode' not in picam2.camera_controls:
@@ -94,6 +94,6 @@
 time.sleep(0.1)
 
 print("Test AfWindows")
-max_window = picam2.camera_properties['ScalerCropMaximum']
+max_window = utils.convert_from_libcamera_type(picam2.camera_ctrl_info['ScalerCrop'][1].max)
 picam2.set_controls({'AfWindows': [max_window]})
 time.sleep(0.1)