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#1 paula s.

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Posted 05 December 2005 - 08:20 PM

I was shooting transparencies the other day with tea candles (about 10 of them) the camera was about a foot away from the transparencies and I was convinced we weren't going to get anything on the film because the light meter wasn't getting any readings...long story short shooting at f1.4 we got a very clear image that was almost too bright...

it got me thinking about foot candles. is there a candle locked up somewhere in a dark room that was originally used to measure foot candles or can you measure a foot candle from any old candle?

-paula
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#2 John Pytlak RIP

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Posted 05 December 2005 - 08:37 PM

I was shooting transparencies the other day with tea candles (about 10 of them) the camera was about a foot away from the transparencies and I was convinced we weren't going to get anything on the film because the light meter wasn't getting any readings...long story short shooting at f1.4 we got a very clear image that was almost too bright...

it got me thinking about foot candles. is there a candle locked up somewhere in a dark room that was originally used to measure foot candles or can you measure a foot candle from any old candle?

-paula


Once upon a time, light measurement was actually based on comparison to REAL candles. A "foot candle" was the light level one foot away from a "standard candle". Today, standards are maintained by national or international standards bodies like NIST, ANSI, and CIE, and are either based on unchanging physical phenomena or a "physical" standard which is used to calibrate others.
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#3 Laurent Andrieux

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Posted 06 December 2005 - 05:05 PM

I was tought at school that the candle as a unit was worth 0.98 average "candle light", (we call "bougie" in french), that was an older unit even... :)
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#4 Solomons De Valois

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Posted 27 January 2006 - 05:16 AM

clicky clicky
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