並前往https://books.google.com.tw/books?id=3PpR3iy9nYoC&pg=PA169&lpg=PA169&dq=DSLR+PTT&source=bl&ots=GYkswn_0PH&sig=ACfU3U0uk8EWMd_zKz_rJsuNO1RtfXIF7g&hl=zh-TW&sa=X&ved=2ahUKEwj3ibimzJ6AAxV3mlYBHQtXAOoQ6AF6BAh_EAM