[問題] PENTAX LX A模式最長曝光時間
按照說明書上寫的，A模式快門可以從1/2000 s到125 s。
可是我實際上底片測試的時候，A模式拍夜景測光如果比4秒慢的時候，不會自己關起來
造成底片變成全灰。(其他時間的測光都很準確)
所以我有一次就不上底片測試，如果低於4秒確實也會關不起來，但是只要拿到強光下就
會馬上蓋起來，表示實時測光應該是沒問題的。
然後我蓋上鏡頭蓋測試A模式，結果按下快門放開之後，到了150秒都沒有關起來，一打開
鏡頭蓋就關起來了。
想詢問版上有沒有熟悉LX的版友也有測試過這個功能？
節錄說明書
[SHOOTING AUTOMATICALLY]
......
The LX will then read the amount of light striking the film plane, select the
precise shutter speed required for a proper exposure from the continuously
variable range of 1/2000th second down to 125 seconds during normal
temperature
......
[Electronically-Controlled Shutter Speeds]
Your Pentax LX provides electronically-controlled stepless shutter speeds in
the "Automatic't mode from 1/2000th second down to 125 sec.
......
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