diff --git a/src/openflexure_microscope_server/things/__init__.py b/src/openflexure_microscope_server/things/__init__.py
index 255e0379..b0c5768f 100644
--- a/src/openflexure_microscope_server/things/__init__.py
+++ b/src/openflexure_microscope_server/things/__init__.py
@@ -34,6 +34,8 @@ class OFMThing(lt.Thing):
         self._data_dir = os.path.join(
             os.path.normpath(str(app_data_dir)), os.path.normpath(self.name)
         )
+        if not os.path.exists(self.data_dir):
+            os.makedirs(self.data_dir)
         return self
 
     def __exit__(
diff --git a/src/openflexure_microscope_server/things/autofocus.py b/src/openflexure_microscope_server/things/autofocus.py
index 43cc3e2b..3d1f599c 100644
--- a/src/openflexure_microscope_server/things/autofocus.py
+++ b/src/openflexure_microscope_server/things/autofocus.py
@@ -737,11 +737,9 @@ class AutofocusThing(lt.Thing):
 
         # Loop through the range, saving each capture to disk
         for capture in captures[slice_to_save]:
-            self._cam.save_from_memory(
-                jpeg_path=os.path.join(capture_parameters.images_dir, capture.filename),
-                save_resolution=capture_parameters.save_resolution,
-                buffer_id=capture.buffer_id,
-            )
+            path = os.path.join(capture_parameters.images_dir, capture.filename)
+            self._cam.save_from_memory(path=path, buffer_id=capture.buffer_id)
+
         self._cam.clear_buffers()
         return sharpest_index
 
@@ -823,7 +821,9 @@ class AutofocusThing(lt.Thing):
             camera buffer_id needed for saving.
         """
         stage_location = self._stage.position
-        buffer_id = self._cam.capture_to_memory(buffer_max=buffer_max)
+        buffer_id = self._cam.capture_to_memory(
+            capture_mode="standard", buffer_max=buffer_max
+        )
         return CaptureInfo(
             buffer_id=buffer_id,
             position=stage_location,
@@ -956,14 +956,8 @@ class AutofocusThing(lt.Thing):
 
         # Save all captures
         for capture in captures:
-            self._cam.save_from_memory(
-                jpeg_path=os.path.join(
-                    capture_parameters.images_dir,
-                    capture.filename,
-                ),
-                save_resolution=capture_parameters.save_resolution,
-                buffer_id=capture.buffer_id,
-            )
+            path = os.path.join(capture_parameters.images_dir, capture.filename)
+            self._cam.save_from_memory(path=path, buffer_id=capture.buffer_id)
 
         self._cam.clear_buffers()
 
diff --git a/src/openflexure_microscope_server/things/scan_workflows.py b/src/openflexure_microscope_server/things/scan_workflows.py
index fe4ee898..4eeb419b 100644
--- a/src/openflexure_microscope_server/things/scan_workflows.py
+++ b/src/openflexure_microscope_server/things/scan_workflows.py
@@ -164,9 +164,9 @@ class ScanWorkflow(Generic[SettingModelType], lt.Thing):
         self._autofocus.fast_autofocus(dz=dz)
         focus_height = self._stage.get_xyz_position()[2]
         filename = f"img_{xyz_pos[0]}_{xyz_pos[1]}_{focus_height}.jpeg"
-        self._cam.capture_and_save(
-            jpeg_path=os.path.join(images_dir, filename),
-            save_resolution=save_resolution,
+        self._cam.capture_and_save_to_path(
+            path=os.path.join(images_dir, filename),
+            capture_mode="standard",
         )
 
         return True, focus_height
diff --git a/src/openflexure_microscope_server/things/stage_measure.py b/src/openflexure_microscope_server/things/stage_measure.py
index 0f633ee1..c6dc122b 100644
--- a/src/openflexure_microscope_server/things/stage_measure.py
+++ b/src/openflexure_microscope_server/things/stage_measure.py
@@ -197,9 +197,6 @@ class RangeofMotionThing(OFMThing):
                 "time": total_time,
             }
 
-            if not os.path.exists(self.data_dir):
-                os.makedirs(self.data_dir)
-
             timestamp = datetime.now().strftime("%Y_%m_%d_%H_%M")
             datafile_path = os.path.join(self.data_dir, f"rom_data_{timestamp}.json")
             with open(datafile_path, "w", encoding="utf-8") as f: