diff --git a/cimery/crates/viewer/src/camera.rs b/cimery/crates/viewer/src/camera.rs
index dd976cb..9fe51ba 100644
--- a/cimery/crates/viewer/src/camera.rs
+++ b/cimery/crates/viewer/src/camera.rs
@@ -125,9 +125,10 @@ impl Camera {
     // ── Interaction ────────────────────────────────────────────────────────
 
     /// Orbit by dragging (delta in pixels, scaled to radians).
+    /// 사용자 요청: 회전 방향 반전 (yaw·pitch 양쪽 모두).
     pub fn orbit(&mut self, delta_x: f32, delta_y: f32) {
-        self.yaw   += delta_x * 0.005;
-        self.pitch  = (self.pitch - delta_y * 0.005)
+        self.yaw   -= delta_x * 0.005;
+        self.pitch  = (self.pitch + delta_y * 0.005)
             .clamp(-std::f32::consts::FRAC_PI_2 + 0.05, std::f32::consts::FRAC_PI_2 - 0.05);
     }