diff --git a/Makefile b/Makefile
index 1f42d88..b5e5e50 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-raytracer: main.cpp vec3.hpp color.hpp ray.hpp hittable.hpp sphere.hpp hittable_list.hpp rtweekend.hpp
+raytracer: camera.hpp color.hpp hittable.hpp hittable_list.hpp material.hpp ray.hpp rtweekend.hpp sphere.hpp vec3.hpp
 	@g++ -g -O2 -Wall -Wextra -Wpedantic main.cpp -o raytracer
 
 image: raytracer
diff --git a/main.cpp b/main.cpp
index 4d3e218..c7ca4f0 100644
--- a/main.cpp
+++ b/main.cpp
@@ -75,8 +75,8 @@ int main()
 
     std::shared_ptr<lambertian> material_ground = make_shared<lambertian>(color(0.8, 0.8, 0.0));
     std::shared_ptr<lambertian> material_center = make_shared<lambertian>(color(0.7, 0.3, 0.3));
-    std::shared_ptr<metal> material_left   = make_shared<metal>(color(0.8, 0.8, 0.8));
-    std::shared_ptr<metal> material_right  = make_shared<metal>(color(0.8, 0.6, 0.2));
+    std::shared_ptr<metal> material_left   = make_shared<metal>(color(0.8, 0.8, 0.8), 0.3);
+    std::shared_ptr<metal> material_right  = make_shared<metal>(color(0.8, 0.6, 0.2), 1.0);
 
     world.add(make_shared<sphere>(point3( 0.0, -100.5, -1.0), 100.0, material_ground));
     world.add(make_shared<sphere>(point3( 0.0,    0.0, -1.0),   0.5, material_center));
diff --git a/material.hpp b/material.hpp
index 2ff657e..b8f93e8 100644
--- a/material.hpp
+++ b/material.hpp
@@ -37,13 +37,18 @@ struct lambertian : material {
 struct metal : material {
     /* Attributes */
     color albedo;
+    double fuzz;
     // Constructor
-    metal(const color& c) { albedo = c; };
+    metal(const color& c, double f)
+    {
+        albedo = c;
+        fuzz = f;
+    };
 
     virtual bool scatter(const ray& r_in, const hit_record& rec, color& attenuation, ray& scattered) const override
     {
         vec3 reflected = reflect(normalize(r_in.direction), rec.normal);
-        scattered = ray(rec.p, reflected);
+        scattered = ray(rec.p, reflected + fuzz*random_in_unit_sphere());
         attenuation = albedo;
         return (dot(scattered.direction, rec.normal) > 0);
     }