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B/W Tungston???


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#1 Dory Breaux DP

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Posted 21 May 2007 - 11:47 PM

I'm a little confused about this one. I thought that there wasnt any T/D ballancing in BW film because there isnt any color? Am I wrong?
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#2 Will Montgomery

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Posted 21 May 2007 - 11:59 PM

Tungsten light and daylight are are different wavelengths so even black & white film reacts differently under different lighting even at the same meter reading. Obviously it doesn't effect color, but it effects contrast and exposure... that's why even black & white films have different exposures under daylight or tungsten light.

I'm sure someone can explain that better.
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#3 David Mullen ASC

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Posted 22 May 2007 - 12:05 AM

It's a b&w stock so it doesn't have a color balance - the image is monochrome afterall. But even though it is panchromatic (sensitive to all color wavelenths) it's slightly more sensitive to the blue end of the spectrum than the red end, hence why it is rated 1/3 of stop faster in 5500K light than 3200K light.

Doesn't affect contrast per se, but it does allow you to use color filters to control the exposure/density of different colors, which can affect contrast -- for example, in daylight, a red filter makes blue skies darker, and shadows darker (because they have a lot of blue in them) but faces lighter (because they have red in them). So contrast is increased since now you have whiter faces against darker skies with darker shadows.
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#4 Dory Breaux DP

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Posted 22 May 2007 - 12:08 AM

Alright thanks. I think I'm going to use 250T stock with a tungston to daylight filter and a yellow filter to get he effect I'm going for. SHould be cool.
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Visual Products

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Broadcast Solutions Inc

Wooden Camera

rebotnix Technologies

FJS International, LLC

Technodolly

CineTape

Tai Audio

Aerial Filmworks

Paralinx LLC

Abel Cine

Media Blackout - Custom Cables and AKS