diff --git a/include/omath/projection/camera.hpp b/include/omath/projection/camera.hpp
index 35bb1f0..4fca833 100644
--- a/include/omath/projection/camera.hpp
+++ b/include/omath/projection/camera.hpp
@@ -242,7 +242,16 @@ namespace omath::projection
         template<class Type>
         [[nodiscard]] constexpr static bool is_ndc_out_of_bounds(const Type& ndc) noexcept
         {
-            return std::ranges::any_of(ndc.raw_array(), [](const auto& val) { return val < -1 || val > 1; });
+            const auto& raw_array = ndc.raw_array();
+
+            if (raw_array[2] < 0.f)
+                return true;
+
+            for (std::size_t i = 0; i < 2; i++)
+                if (raw_array[i] < -1.f || raw_array[i] > 1.f)
+                    return true;
+
+            return false;
         }
 
         // NDC REPRESENTATION:
diff --git a/source/engines/unreal_engine/formulas.cpp b/source/engines/unreal_engine/formulas.cpp
index e4a0ad9..9b40124 100644
--- a/source/engines/unreal_engine/formulas.cpp
+++ b/source/engines/unreal_engine/formulas.cpp
@@ -37,13 +37,6 @@ namespace omath::unreal_engine
     Mat4X4 calc_perspective_projection_matrix(const float field_of_view, const float aspect_ratio, const float near,
                                               const float far) noexcept
     {
-        const float fov_half_tan = std::tan(angles::degrees_to_radians(field_of_view) / 2.f);
-
-        return {
-                {1.f / (aspect_ratio * fov_half_tan), 0, 0, 0},
-                {0, 1.f / (fov_half_tan), 0, 0},
-                {0, 0, (far + near) / (far - near), -(2.f * far * near) / (far - near)},
-                {0, 0, -1.f, 0},
-        };
+        return mat_perspective_left_handed(field_of_view, aspect_ratio, near, far);
     }
 } // namespace omath::unreal_engine