diff --git a/preferences_schema_2.json b/preferences_schema_2.json
index 049f098..42e5eef 100644
--- a/preferences_schema_2.json
+++ b/preferences_schema_2.json
@@ -48,8 +48,7 @@
         },
         "scaling": {
             "type": "integer",
-            "minimum": 0,
-            "maximum": 7
+            "minimum": 0
         },
         "colormap": {
             "type": "string"
@@ -59,15 +58,25 @@
             "minimum": 0,
             "maximum": 100
         },
-        "scalingAlpha": {
+        "scalingAlphaLog": {
             "type": "number",
-            "minimum": 0.1,
-            "maximum": 1000000
+            "exclusiveMinimum": 0
+        },
+        "scalingAlphaPower": {
+            "type": "number",
+            "exclusiveMinimum": 0
+        },
+        "scalingAlphaSinh": {
+            "type": "number",
+            "exclusiveMinimum": 0
+        },
+        "scalingAlphaAsinh": {
+            "type": "number",
+            "exclusiveMinimum": 0
         },
         "scalingGamma": {
             "type": "number",
-            "minimum": 0.1,
-            "maximum": 2
+            "exclusiveMinimum": 0
         },
         "nanColorHex": {
             "type": "string",
diff --git a/workspace_schema_1.json b/workspace_schema_1.json
index ffa8258..cb61e53 100644
--- a/workspace_schema_1.json
+++ b/workspace_schema_1.json
@@ -49,8 +49,7 @@
             "properties": {
                 "scaling": {
                     "type": "integer",
-                    "minimum": 0,
-                    "maximum": 7
+                    "minimum": 0
                 },
                 "colorMap": {
                     "type": "string"
@@ -68,10 +67,24 @@
                     "type": "number"
                 },
                 "gamma": {
-                    "type": "number"
+                    "type": "number",
+                    "exclusiveMinimum": 0
                 },
-                "alpha": {
-                    "type": "number"
+                "alphaLog": {
+                    "type": "number",
+                    "exclusiveMinimum": 0
+                },
+                "alphaPower": {
+                    "type": "number",
+                    "exclusiveMinimum": 0
+                },
+                "alphaSinh": {
+                    "type": "number",
+                    "exclusiveMinimum": 0
+                },
+                "alphaAsinh": {
+                    "type": "number",
+                    "exclusiveMinimum": 0
                 },
                 "inverted": {
                     "type": "boolean"