diff --git a/snapshotprocessor.py b/snapshotprocessor.py
index e4fcd18..452c981 100644
--- a/snapshotprocessor.py
+++ b/snapshotprocessor.py
@@ -458,10 +458,13 @@ class SnapshotProcessor(HDF5Container):
         self._cam = {}
         for ax_los in self._ax_nb:  # los = line of sight
             ax_v = self._axes_v[ax_los]
+            real_ax = ax_los
+            if real_ax == "y":
+                real_ax = [0, -1, 0] # we look from -y to keep z upwards
 
             self._cam[ax_los] = Camera(
                 center=self.params.pymses.center,
-                line_of_sight_axis=ax_los,
+                line_of_sight_axis=real_ax,
                 region_size=[im_extent[1] - im_extent[0], im_extent[3] - im_extent[2]],
                 distance=distance,
                 far_cut_depth=distance,