diff --git a/examples/deferred.cpp b/examples/deferred.cpp
index bc934f23..a94e0034 100644
--- a/examples/deferred.cpp
+++ b/examples/deferred.cpp
@@ -2,6 +2,7 @@
 #include <psemek/app/main.hpp>
 
 #include <psemek/gfx/renderer/deferred.hpp>
+#include <psemek/gfx/effect/gamma.hpp>
 #include <psemek/gfx/painter.hpp>
 
 #include <psemek/geom/mesh.hpp>
@@ -33,6 +34,9 @@ struct deferred_app
 	void render() override;
 
 	gfx::deferred_renderer renderer;
+	gfx::framebuffer pre_gamma_framebuffer;
+	gfx::texture_2d pre_gamma_texture;
+	gfx::gamma_correction gamma_correction;
 
 	geom::spherical_camera camera;
 
@@ -63,6 +67,8 @@ deferred_app::deferred_app()
 	camera.azimuthal_angle = 0.f;
 	camera.elevation_angle = geom::rad(30.f);
 
+	pre_gamma_texture.nearest_filter();
+
 	// 0 - vec3 position
 	// 1 - vec4 color (used if color & texture are not set)
 	// 2 - vec2 texcoord (used if texture is set)
@@ -282,6 +288,10 @@ void deferred_app::on_resize(int width, int height)
 {
 	app::on_resize(width, height);
 	camera.set_fov(camera.fov_y, static_cast<float>(width) / height);
+
+	pre_gamma_texture.load<gfx::color_rgb>({width, height});
+	pre_gamma_framebuffer.color(pre_gamma_texture);
+	pre_gamma_framebuffer.assert_complete();
 }
 
 void deferred_app::on_mouse_move(int x, int y, int dx, int dy)
@@ -353,16 +363,13 @@ void deferred_app::render()
 	}
 
 	gfx::deferred_renderer::options options;
-	options.framebuffer = &gfx::framebuffer::null();
-	options.draw_buffer = gl::BACK;
-	options.viewport = {{{0, width()}, {0, height()}}};
 	options.camera = &camera;
 
-	options.clear_color = gfx::light(gfx::blue, 0.8f).as_color_4f();
+	options.clear_color = geom::vector{0.f, 0.f, 0.1f, 1.f};
 	options.ambient = {1.f, 1.f, 1.f};
 
 	options.directional_lights.emplace_back();
-	options.directional_lights[0].color = {5.f, 5.f, 5.f};
+	options.directional_lights[0].color = {1.f, 1.f, 1.f};
 	options.directional_lights[0].direction = {1.f, 2.f, 3.f};
 
 	options.point_lights.emplace_back();
@@ -403,9 +410,32 @@ void deferred_app::render()
 		objects.push_back(obj);
 	}
 
+	float const gamma = 2.2f;
+
 	options.max_intensity = 15.f;
 
-	renderer.render(objects, options);
+	gfx::framebuffer::null().bind();
+	gl::DrawBuffer(gl::BACK);
+
+	gl::ClearColor(0.f, 0.f, 0.0f, 0.f);
+	gl::Clear(gl::COLOR_BUFFER_BIT);
+
+
+	{
+		gfx::render_target target;
+		target.framebuffer = &pre_gamma_framebuffer;
+		target.draw_buffer = gl::COLOR_ATTACHMENT0;
+		target.viewport = {{{0, width()}, {0, height()}}};
+		renderer.render(objects, target, options);
+	}
+
+	{
+		gfx::render_target target;
+		target.framebuffer = &gfx::framebuffer::null();
+		target.draw_buffer = gl::BACK_LEFT;
+		target.viewport = {{{0, width()}, {0, height()}}};
+		gamma_correction.invoke(pre_gamma_texture, target, {1.f / gamma});
+	}
 
 	{
 		gfx::painter::text_options opts;
@@ -415,7 +445,7 @@ void deferred_app::render()
 		opts.y = gfx::painter::y_align::top;
 		opts.c = gfx::yellow.as_color_rgba();
 
-		painter.text({10.f, 10.f}, util::to_string("FPS: ", 1.f / frame_time.average()), opts);
+		painter.text({10.f, 10.f}, util::to_string("FPS: ", std::round(1.f / frame_time.average())), opts);
 	}
 
 	gl::Enable(gl::BLEND);