Talk:Filter factor

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Removed Cokin numbers[edit]

I removed the Cokin filter numbers from the table, because there's only one company that uses them. Wratten numbers are basically the industry standard; everybody, including Cokin, uses them, at least for the color correcting filters. Since mired values (KR1.5, KB1.5, etc.) are used for color correction by more than one company, I added those to the "other designation" column. — Wwagner 22:09, 31 January 2007 (UTC)[reply]