diff --git a/em_workflows/brt/flow.py b/em_workflows/brt/flow.py
index 5c1b36d8..328903aa 100644
--- a/em_workflows/brt/flow.py
+++ b/em_workflows/brt/flow.py
@@ -521,7 +521,7 @@ def gen_ng_metadata(fp_in: FilePath) -> Dict:
     ng_asset["metadata"] = {
         "shader": hw_image.shader_type,
         "dimensions": hw_image.dims,
-        "shaderParameters": hw_image.neuroglancer_shader_parameters(),
+        "shaderParameters": hw_image.neuroglancer_shader_parameters(mad_scale=5.0),
     }
     return ng_asset
 
diff --git a/em_workflows/czi/flow.py b/em_workflows/czi/flow.py
index 2b262dd3..a22a3b0d 100644
--- a/em_workflows/czi/flow.py
+++ b/em_workflows/czi/flow.py
@@ -71,7 +71,7 @@ def gen_imageSet(file_path: FilePath) -> List:
             ng_asset["metadata"] = dict(
                 shader=image.shader_type,
                 dimensions="XY",
-                shaderParameters=image.neuroglancer_shader_parameters(),
+                shaderParameters=image.neuroglancer_shader_parameters(mad_scale=5.0),
             )
             assets.append(ng_asset)
         image_elt["assets"] = assets
diff --git a/em_workflows/sem_tomo/flow.py b/em_workflows/sem_tomo/flow.py
index e8625e8c..786e7cb5 100644
--- a/em_workflows/sem_tomo/flow.py
+++ b/em_workflows/sem_tomo/flow.py
@@ -252,7 +252,7 @@ def gen_ng_metadata(fp_in: FilePath) -> Dict:
     ng_asset["metadata"] = dict(
         shader=hw_image.shader_type,
         dimensions=hw_image.dims,
-        shaderParameters=hw_image.neuroglancer_shader_parameters(),
+        shaderParameters=hw_image.neuroglancer_shader_parameters(mad_scale=5.0),
     )
     return ng_asset