Last Updated:2022/12/24

The f/stops are arranged so that as you stop down, each stop allows half the amount of light to pass through as the stop before it did.

音声機能が動作しない場合はこちらをご確認ください
Edit Histories(0)

Sentence quizzes to help you learn to read

Edit Histories(0)

Login / Sign up

 

Download the app!
DiQt

DiQt

Free

★★★★★★★★★★