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How to establish ISO rating of modern digital cameras objectively

Tony Ngai
 

各位有一近期常被問到之技術問題, i.e 如何决定現代電影數碼攝影機之ISO rating?
all:
recent frequently being asked question, 'how to determine the ISO rating(objectively)on modern digital motion imaging cameras?
 
在first edition of ASC video manua 1972l , page 137 by Harry Mathias, Harry 有一頁文章,
“How to establish n exposure index for a video camera”!

That article was in the 1972 edition of ASC video manual(first edition),

當然那是1972年,現在是2018年, 現在的digital camera has:
“Raw, Log, various game and some has dual gain ISO rating”
 
那麼什様決定(客觀地)camera’s ISO?呢?
So how to determine the ISO rating of modern digital imaging cameras(objectively) nowadays?

Many thanks,
 
as I mentioned, I will mirror this in CML to gain benefit of both worlds(language),
 
 

Tony Ngai 魏天明 
Main driver of CCML
 
(Mirror of concept of CML)開始轉寄郵件:

ccml@groups.io
www.societyofmotionimaging.org

Chan Chi Ying
 

Where is my ASC video manual?!!! :-)

Best
Chan Chi Ying
DP HK