diff --git a/hlsl/phosphor.fx b/hlsl/phosphor.fx
index 59b2ce98935..579a110eb6d 100644
--- a/hlsl/phosphor.fx
+++ b/hlsl/phosphor.fx
@@ -128,7 +128,7 @@ float4 ps_main(PS_INPUT Input) : COLOR
 		b *= tau.b == 0 ? 0 : exp(-DeltaTime / tau.b);
 	}
 	else {
-		float3 gamma = 1 / (TimeConstant * 0.04342944819);
+		float3 gamma = 1 / (TimeConstant * 0.004342944819);
 
 		if (r != 0.0f)
 			r = pow(gamma.r * DeltaTime + pow(1 / r, 1 / Beta.r), -Beta.r);
diff --git a/ini/presets/raster.ini b/ini/presets/raster.ini
index 8f141e875fc..702f071060b 100644
--- a/ini/presets/raster.ini
+++ b/ini/presets/raster.ini
@@ -38,8 +38,8 @@ scale                     1.15,1.05,0.90
 power                     0.90,0.90,1.15
 floor                     0.025,0.025,0.025
 phosphor_mode             2
-phosphor_beta             1.8,1.8,1.8
-phosphor_gamma            50,50,50
+phosphor_time             0.050,0.005,0.005
+phosphor_beta             1.0,0.5,0.5
 
 #
 # NTSC POST-PROCESSING OPTIONS
diff --git a/ini/presets/vector-mono.ini b/ini/presets/vector-mono.ini
index 33e4c3096f3..1886785c0bd 100644
--- a/ini/presets/vector-mono.ini
+++ b/ini/presets/vector-mono.ini
@@ -37,8 +37,9 @@ offset                    0.0,0.0,0.0
 scale                     1.0,1.0,1.0
 power                     1.0,1.0,1.0
 floor                     0.0,0.0,0.0
-phosphor_mode             1
-phosphor_tau              0.026,0.026,0.026
+phosphor_mode             2
+phosphor_time             0.05,0.05,0.05
+phosphor_beta             1.0,1.0,1.0
 
 #
 # NTSC POST-PROCESSING OPTIONS
diff --git a/ini/presets/vector.ini b/ini/presets/vector.ini
index 1748476c385..c1b57de84a9 100644
--- a/ini/presets/vector.ini
+++ b/ini/presets/vector.ini
@@ -41,8 +41,8 @@ scale                     1.0,1.0,1.0
 power                     1.0,1.0,1.0
 floor                     0.0,0.0,0.0
 phosphor_mode             2
-phosphor_beta             1.8,1.8,1.8
-phosphor_gamma            50,50,50
+phosphor_time             0.050,0.005,0.005
+phosphor_beta             1.0,0.5,0.5
 
 #
 # NTSC POST-PROCESSING OPTIONS