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Re: any way to reduce noise in build 16

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Re: any way to reduce noise in build 16
by David Battistella on Jul 23, 2008 at 10:40:13 pm


One thing that is being overlooked here is that the Kelvin can be set AFTER the fact because with RED you are recording a RAW file.

The Color temperature is METADATA ONLY.

IE; I have solved many noise problems by setting a one light in the REDCINE exporting and then rebalancing the shot on a second CC pass.

I rarely set the white balance to 3200K and I find that bumping the Kelvin to about 4300K warms up the QT reference file, reduces noise and is easily corrected back if need be.

It is true that the sensor performs best at about 5000K and is optimum, but just take a moment to think of the RED as BW film in terms of getting your exposure and latitude correct and then you have AMPLE room to tweak the Kelvin and extract the best image.

I try to think about it in these terms:
The noise is happening based on l how you are instructing the RAW file to debayer more that it does in the sensor itself. To me it is more about light intensity than it is about color temperature. If you hit the sensor with a lot of light then you can make just about any image look really good.

I forgot to ask bob if where his Kelvin was set to but if it was 3200K and he bumped it to 4300K a good chunk of the blue channel noise would be gone.

David



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http://blogs.creativecow.net/DavidBattistella


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