光圈差1檔，進光量就減1半。（比如從F2到F2.8，反之亦然）

來源: 位酷哥於 2023-12-19 10:30:35 [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.