並前往https://books.google.com.tw/books?id=4e1hGOu7AusC&pg=PA150&lpg=PA150&dq=DSLR+PTT&source=bl&ots=uBjUwCeJUR&sig=ACfU3U1JQM_VHmNvRocY0dWtvxWMBS-lTA&hl=zh-TW&sa=X&ved=2ahUKEwj3ibimzJ6AAxV3mlYBHQtXAOoQ6AF6BQiVARAD