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Old February 7th, 2006, 06:41 PM   #1
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What would the ASA be?

Hello all:

If I were shooting 24p with the gain at 0 and no ND filter, what's the light sensitivity of the CCDs, and how would the camera compare to film? What film speed would be shot to get similar settings (shutter & aperture) on the HD100?

I have a really nice cine light meter that would be good to use from time to time. Many thanks-

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Old February 7th, 2006, 06:48 PM   #2
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If you're using Standard gamma, it's a little less sensitive than 320...maybe a 1/4 stop. 300ish?

If you're using Cinegamma, then the same number minus a stop. So 160 - 1/4 stop = 120?
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Old February 7th, 2006, 06:50 PM   #3
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And if you increase the gamma it can go as high as 600ASA(on 0 dB)
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Old February 8th, 2006, 05:31 AM   #4
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Sounds like I need to set the camera up and do my own tests. I'm an old Zone System photographer, so reading a spot meter feels pretty comfortable. It would be nice to put my Sekonic L-508 to good use.
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Old February 14th, 2006, 10:44 AM   #5
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Nate or Tim is it common for you guys or "shooters" in general to use a light meter for DV/HDV?
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Old February 14th, 2006, 11:07 AM   #6
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The "zebra" pattern is your built-in light meter. As a friend of mine used to say in the mid-nineties: "My betacam is a $50,000 light meter." Unless you can be 100% certain on the ASA rating of the camera (and apparently we can't since it fluctuates so much based on various settings), the use of a light meter is actually less precise.
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Old February 14th, 2006, 04:39 PM   #7
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Quote:
Originally Posted by Jon Glen
Nate or Tim is it common for you guys or "shooters" in general to use a light meter for DV/HDV?
I use an incident light meter all the time whether it is video or film. However, when shooting video, I usually only use the light meter to set light ratios and keep track of how many stops over and under I go into the shadows/highlights, and then set the final exposure with the zebras.
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