diff --git a/src/pose_tracking_exp/tracking/rpt_adapter.py b/src/pose_tracking_exp/tracking/rpt_adapter.py
index 1703a85..1b0633c 100644
--- a/src/pose_tracking_exp/tracking/rpt_adapter.py
+++ b/src/pose_tracking_exp/tracking/rpt_adapter.py
@@ -15,16 +15,16 @@ def build_rpt_config(
     min_group_size: int,
 ) -> TriangulationConfig:
     cameras = [
-        {
-            "name": camera.name,
-            "width": camera.width,
-            "height": camera.height,
-            "K": camera.K.tolist(),
-            "DC": camera.DC.tolist(),
-            "R": camera.pose_R.tolist(),
-            "T": camera.pose_T.reshape(3, 1).tolist(),
-            "model": camera.model,
-        }
+        rpt.make_camera(
+            name=camera.name,
+            width=camera.width,
+            height=camera.height,
+            K=camera.K,
+            DC=camera.DC,
+            R=camera.pose_R,
+            T=camera.pose_T,
+            model=camera.model,
+        )
         for camera in scene.cameras
     ]
     roomparams = np.asarray([scene.room_size, scene.room_center], dtype=np.float32)
diff --git a/tests/test_camera_conventions.py b/tests/test_camera_conventions.py
index 895e64f..7bd270f 100644
--- a/tests/test_camera_conventions.py
+++ b/tests/test_camera_conventions.py
@@ -7,6 +7,7 @@ import numpy as np
 import pytest
 
 pytest.importorskip("rpt")
+import rpt
 
 from pose_tracking_exp.schema import CameraCalibration, CameraModel, SceneConfig, parse_camera_model
 from pose_tracking_exp.tracking.replay_io import load_scene_file
@@ -125,7 +126,7 @@ def test_build_rpt_config_uses_pose_convention(monkeypatch: pytest.MonkeyPatch)
     captured: dict[str, object] = {}
 
     def fake_make_triangulation_config(
-        cameras: list[dict[str, object]],
+        cameras: list[rpt.Camera],
         roomparams: np.ndarray,
         joint_names: list[str],
         *,
@@ -143,6 +144,6 @@ def test_build_rpt_config_uses_pose_convention(monkeypatch: pytest.MonkeyPatch)
 
     build_rpt_config(scene, min_match_score=0.5, min_group_size=2)
 
-    camera_payload = cast(list[dict[str, object]], captured["cameras"])[0]
-    assert camera_payload["R"] == camera.pose_R.tolist()
-    assert camera_payload["T"] == camera.pose_T.reshape(3, 1).tolist()
+    camera_payload = cast(list[rpt.Camera], captured["cameras"])[0]
+    np.testing.assert_allclose(camera_payload.R, camera.pose_R.tolist())
+    np.testing.assert_allclose(camera_payload.T, camera.pose_T.reshape(3, 1).tolist())