diff --git a/src/openflexure_microscope_server/things/autofocus.py b/src/openflexure_microscope_server/things/autofocus.py
index f62416aa..9bb5bb54 100644
--- a/src/openflexure_microscope_server/things/autofocus.py
+++ b/src/openflexure_microscope_server/things/autofocus.py
@@ -20,7 +20,7 @@ from pydantic import BaseModel, computed_field, field_validator, model_validator
 import labthings_fastapi as lt
 from labthings_fastapi.types.numpy import NDArray
 
-from .camera import BaseCamera
+from .camera import BaseCamera, CaptureParams
 from .stage import BaseStage
 
 LOGGER = logging.getLogger(__name__)
@@ -40,13 +40,6 @@ class AutofocusParams(BaseModel):
     sharpness_method: str = "jpeg"
 
 
-class CaptureParams(BaseModel):
-    """A class for capturing at least a single image."""
-
-    images_dir: str
-    save_resolution: tuple[int, int]
-
-
 class StackParams(BaseModel):
     """A class for holding stack parameters, and returning computed ones."""
 
diff --git a/src/openflexure_microscope_server/things/camera/__init__.py b/src/openflexure_microscope_server/things/camera/__init__.py
index cb599bdc..a9b28811 100644
--- a/src/openflexure_microscope_server/things/camera/__init__.py
+++ b/src/openflexure_microscope_server/things/camera/__init__.py
@@ -20,6 +20,7 @@ from typing import Any, Literal, Mapping, Optional, Self, Tuple
 import numpy as np
 import piexif
 from PIL import Image
+from pydantic import BaseModel
 
 import labthings_fastapi as lt
 from labthings_fastapi.types.numpy import NDArray
@@ -47,6 +48,13 @@ class CaptureError(RuntimeError):
     """An error trying to capture from a CameraThing."""
 
 
+class CaptureParams(BaseModel):
+    """A class for capturing at least a single image."""
+
+    images_dir: str
+    save_resolution: tuple[int, int]
+
+
 class NoImageInMemoryError(RuntimeError):
     """An error called if no image is in memory when accessed."""
 
diff --git a/src/openflexure_microscope_server/things/scan_workflows.py b/src/openflexure_microscope_server/things/scan_workflows.py
index 42f11a18..4acbbe88 100644
--- a/src/openflexure_microscope_server/things/scan_workflows.py
+++ b/src/openflexure_microscope_server/things/scan_workflows.py
@@ -33,13 +33,12 @@ from openflexure_microscope_server.things.autofocus import (
     MIN_TEST_IMAGE_COUNT,
     AutofocusParams,
     AutofocusThing,
-    CaptureParams,
     SmartStackParams,
 )
 from openflexure_microscope_server.things.background_detect import (
     ChannelDeviationLUV,
 )
-from openflexure_microscope_server.things.camera import BaseCamera
+from openflexure_microscope_server.things.camera import BaseCamera, CaptureParams
 from openflexure_microscope_server.things.camera_stage_mapping import CameraStageMapper
 from openflexure_microscope_server.things.stage import BaseStage
 from openflexure_microscope_server.ui import PropertyControl, property_control_for