diff --git a/rendering/opengl33renderer.cpp b/rendering/opengl33renderer.cpp
index d20454c3..9eaf615e 100644
--- a/rendering/opengl33renderer.cpp
+++ b/rendering/opengl33renderer.cpp
@@ -3939,6 +3939,8 @@ bool opengl33_renderer::Render_cab(TDynamicObject const *Dynamic, float const Li
             }
 
             auto const old_ambient { light_ubs.ambient };
+            light_ubs.ambient *= Global.gfx_cab_ambient;
+            light_ubo->update( light_ubs );
             auto const luminance { Global.fLuminance * ( Dynamic->fShade > 0.0f ? Dynamic->fShade : 1.0f ) };
             if( Lightlevel > 0.f ) {
                 // crude way to light the cabin, until we have something more complete in place
diff --git a/shaders/tonemapping.glsl b/shaders/tonemapping.glsl
index 863fe0fe..13798b42 100644
--- a/shaders/tonemapping.glsl
+++ b/shaders/tonemapping.glsl
@@ -109,7 +109,7 @@ vec3 AgxLook(vec3 val)
 
     vec3 offset = vec3(0.0);
     vec3 slope = vec3(1.0);
-    vec3 power = vec3(1.6);
+    vec3 power = mix(vec3(1.0), vec3(1.6), smoothstep(0.0, 0.4, luma));
     float sat = 0.9;
 
 #if AGX_LOOK == 1
diff --git a/utilities/Globals.cpp b/utilities/Globals.cpp
index b4f2e14b..a18234af 100644
--- a/utilities/Globals.cpp
+++ b/utilities/Globals.cpp
@@ -1335,6 +1335,11 @@ global_settings::ConfigParse_gfx( cParser &Parser, std::string_view const Token
         Parser.getTokens();
         Parser >> RenderCabShadowsRange;
     }
+    else if (Token == "gfx.cab.ambient")
+    {
+        Parser.getTokens();
+        Parser >> gfx_cab_ambient;
+    }
     else if (Token == "gfx.smoke")
     {
         // smoke visualization toggle
@@ -1600,6 +1605,7 @@ global_settings::export_as_text( std::ostream &Output ) const {
         << shadowtune.range << " "
         << 0 << "\n";
     export_as_text( Output, "gfx.shadows.cab.range", RenderCabShadowsRange );
+    export_as_text( Output, "gfx.cab.ambient", gfx_cab_ambient );
     export_as_text( Output, "gfx.smoke", Smoke );
     export_as_text( Output, "gfx.smoke.fidelity", SmokeFidelity );
     export_as_text( Output, "smoothtraction", bSmoothTraction );
diff --git a/utilities/Globals.h b/utilities/Globals.h
index ad216cd9..caf8af21 100644
--- a/utilities/Globals.h
+++ b/utilities/Globals.h
@@ -159,6 +159,7 @@ struct global_settings {
     bool RenderShadows{ true };
 	bool applicationQuitOrder{false};
     int RenderCabShadowsRange{ 0 };
+    float gfx_cab_ambient{ 1.0f };
     struct shadowtune_t {
         unsigned int map_size{ 2048 };
         float range{ 250.f };