diff --git a/src/types.ts b/src/types.ts
index a56fb72..5377d55 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -53,11 +53,11 @@ export const CONSTANTS = {
 	},
 	MOUSE_WHEEL_SAMPLES: 5,
 	NUM_CURVE_POINTS: 5,
-	STUDY_TARGETS_PER_PRESET: 1,
+	STUDY_TARGETS_PER_PRESET: 25,
 	PRESETS: {
-		A: [1, 2, 3, 4, 5],      // Linear increase
-		B: [1, 1.5, 2.5, 4, 6],  // Slow start, fast end
-		C: [3, 2.5, 2, 1.5, 1],  // Inverse/decreasing
+		A: [1, 1, 1, 1, 1],  // Control: No zoom acceleration
+		B: [1, 2, 3, 4, 5],  // Linear increase
+		C: [1, 1.5, 2.5, 4, 6],  // Exponential increase
 		D: [1, 3, 4, 3, 1],      // Bell curve
 	} as Record<ZoomPreset, number[]>,
 } as const;