Quita las referencias al zoom de la interfaz antigua y aclara el error cuando la cámara no responde

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

app.py

@@ -2316,11 +2316,9 @@ class App(tk.Tk):
                 for b in self.aperture_nudge_btns:
                     b.configure(state="normal")
         elif key == (0, 7) and values:
-            self.zoom_lbl.configure(text=f"{values[0]} mm")
             self._update_lens_line()
         elif key == (0, 8) and values:
             self.zoom_value = values[0]
-            self.zoom_slider.set(values[0])
         elif key == (1, 2) and len(values) >= 2:
             self.wb_kelvin, self.wb_tint = values[0], values[1]
             self.wb_var.set(values[0])