diff --git a/.gitignore b/.gitignore
index 69ded17..d64ded9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,4 @@
 /poetry.lock
 /dist/
 /uv.lock
+.agentbridge
\ No newline at end of file
diff --git a/ndbioimage/__init__.py b/ndbioimage/__init__.py
index d1f5a37..903e220 100755
--- a/ndbioimage/__init__.py
+++ b/ndbioimage/__init__.py
@@ -191,7 +191,8 @@ def get_positions(path: str | Path) -> Optional[list[int]]:
     return subclass.get_positions(AbstractReader.split_path_series(path)[0])
 
 
-class Imread(np.lib.mixins.NDArrayOperatorsMixin, ABC):
+# noinspection PyAbstractClass
+class Imread(np.lib.mixins.NDArrayOperatorsMixin):
     """class to read image files, while taking good care of important metadata,
     currently optimized for .czi files, but can open anything that bioformats can handle
         path: path to the image file
@@ -1528,6 +1529,12 @@ class AbstractReader(Imread, metaclass=ABCMeta):
             self.immersionN = 1
 
         p = re.compile(r"(\d+):(\d+)$")
+        if self.ome.structured_annotations is not None:
+            tirf_angles = {}
+            for annotation in self.ome.structured_annotations:
+                if annotation.description is not None and annotation.description.lower() == "tirfangle":
+                    tirf_angles[int(annotation.id.split(":")[1])] = annotation.value
+            self.tirfangle = [angle for track, angle in sorted(tirf_angles.items(), key=lambda x: x[0])]
         try:
             self.track, self.detector = zip(
                 *[
diff --git a/ndbioimage/readers/cziread.py b/ndbioimage/readers/cziread.py
index c3693ca..203edfb 100644
--- a/ndbioimage/readers/cziread.py
+++ b/ndbioimage/readers/cziread.py
@@ -248,7 +248,7 @@ class Reader(AbstractReader, ABC):
         return [(i - j, i - j + k) for i, j, k in zip(directory_entry.start, start, directory_entry.shape)]
 
     @cached_property
-    def tiles(self):
+    def tiles(self) -> tuple[int, int]:
         columns = 1
         rows = 1
         xml = self.reader.metadata()
@@ -335,6 +335,7 @@ class OmeParse:
         self.get_light_sources()
         self.get_filters()
         self.get_pixels()
+        self.get_tirf_angle()
         self.get_channels()
         self.get_planes()
         self.get_annotations()
@@ -555,6 +556,18 @@ class OmeParse:
             elif self.size_z > 1 and distance.attrib["Id"] == "Z":
                 self.ome.images[0].pixels.physical_size_z = float(self.text(distance.find("Value"))) * 1e6
 
+    def get_tirf_angle(self) -> None:
+        if self.version == "1.0":
+            for track_setup in self.multi_track_setup:
+                tirf_angle = track_setup.find("TirfAngle")
+                if tirf_angle is not None:
+                    self.ome.structured_annotations.append(
+                        model.DoubleAnnotation(
+                            description="TirfAngle", id="Annotation:0", value=50 * float(tirf_angle.text)
+                        )
+                    )
+                    self.ome.images[0].annotation_refs.append(model.AnnotationRef(id="Annotation:0"))
+
     @cached_property
     def positions(self) -> tuple[float, float, Optional[float]]:
         if self.version == "1.0":
@@ -677,28 +690,30 @@ class OmeParse:
                 else:
                     light_source_settings = None
 
-                self.ome.images[0].pixels.channels.append(
-                    model.Channel(
-                        id=f"Channel:{idx}",
-                        name=channel.attrib["Name"],
-                        acquisition_mode=self.text(channel.find("AcquisitionMode")).replace(  # type: ignore
-                            "SingleMoleculeLocalisation", "SingleMoleculeImaging"
-                        ),
-                        color=color,
-                        detector_settings=model.DetectorSettings(
-                            id=detector.attrib["Id"].replace(" ", ""), binning=binning
-                        ),
-                        emission_wavelength=emission_wavelength,
-                        excitation_wavelength=self.try_default(
-                            float, None, self.text(channel.find("ExcitationWavelength"))
-                        ),
-                        # filter_set_ref=model.FilterSetRef(id=ome.instruments[0].filter_sets[filterset_idx].id),
-                        illumination_type=self.text(channel.find("IlluminationType")),  # type: ignore
-                        light_source_settings=light_source_settings,
-                        samples_per_pixel=samples_per_pixel,
-                    )
+                channel = dict(
+                    id=f"Channel:{idx}",
+                    name=channel.attrib["Name"],
+                    acquisition_mode=self.text(channel.find("AcquisitionMode")).replace(  # type: ignore
+                        "SingleMoleculeLocalisation", "SingleMoleculeImaging"
+                    ),
+                    detector_settings=model.DetectorSettings(
+                        id=detector.attrib["Id"].replace(" ", ""), binning=binning
+                    ),
+                    emission_wavelength=emission_wavelength,
+                    excitation_wavelength=self.try_default(
+                        float, None, self.text(channel.find("ExcitationWavelength"))
+                    ),
+                    # filter_set_ref=model.FilterSetRef(id=ome.instruments[0].filter_sets[filterset_idx].id),
+                    illumination_type=self.text(channel.find("IlluminationType")),  # type: ignore
+                    light_source_settings=light_source_settings,
+                    samples_per_pixel=samples_per_pixel,
                 )
 
+                if color is not None:
+                    channel["color"] = color
+
+                self.ome.images[0].pixels.channels.append(model.Channel(**channel))
+
     def get_planes(self) -> None:
         try:
             exposure_times = [
diff --git a/ndbioimage/readers/tifread.py b/ndbioimage/readers/tifread.py
index 561ae95..6933db8 100644
--- a/ndbioimage/readers/tifread.py
+++ b/ndbioimage/readers/tifread.py
@@ -142,11 +142,18 @@ class Reader(AbstractReader, ABC):
         )
         for c, z, t in product(range(size_c), range(size_z), range(size_t)):
             ome.images[0].pixels.planes.append(model.Plane(the_c=c, the_z=z, the_t=t, delta_t=interval_t * t))
+        if (spacing := self.metadata.get("spacing")) is not None:
+            ome.images[0].pixels.physical_size_z = spacing
+        if (unit := self.metadata.get("unit")) is not None and unit.lower() != "micron":
+            raise ValueError(f"cannot parse unit {unit}")
+
         return ome
 
     def open(self):
         if self.series != 0:
-            raise FileNotFoundError(f"Series {self.series} not found in {self.path}. Tifread only supports one series.")
+            raise FileNotFoundError(
+                f"Series {self.series} not found in {self.path}. Tifread only supports one series."
+            )
         self.reader = tifffile.TiffFile(self.path)
         page = self.reader.pages.first
         self.p_ndim = page.ndim  # noqa
diff --git a/pyproject.toml b/pyproject.toml
index 3483e8d..12cdbb4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "ndbioimage"
-version = "2026.4.0"
+version = "2026.7.0"
 description = "Bio image reading, metadata and some affine registration."
 authors = [
     { name = "W. Pomp", email = "w.pomp@nki.nl" }
@@ -24,8 +24,8 @@ dependencies = [
     "pyyaml",
     "SimpleITK-SimpleElastix; sys_platform != 'darwin'",
     "scikit-image",
-    "tifffile <= 2025.1.10",
-    "tiffwrite >= 2024.12.1",
+    "tifffile >= 2024.1.30, <= 2025.1.10",
+    "tiffwrite >= 2026.5.0",
     "tqdm",
 ]
 
diff --git a/tests/files/YTL1849A111_2023_05_04__14_46_19_cellnr_1_track.tif b/tests/files/YTL1849A111_2023_05_04__14_46_19_cellnr_1_track.tif
deleted file mode 100644
index 7027055..0000000
Binary files a/tests/files/YTL1849A111_2023_05_04__14_46_19_cellnr_1_track.tif and /dev/null differ