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RED - 4K; 2K


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#1 Ashley Barron

Ashley Barron
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Posted 18 February 2009 - 11:28 PM

Hi there,

I know that the RED can either shoot in 4K and in 2K. I'm wondering how this affects the focus puller - does one equivalate to 35mm and the other to 16mm so that you're focus isn't as specific? Or does it simply mean the frame size gets smaller?

If someone could lend an idea that would be great.

Thank you,
Ashley.
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#2 Robert Tagliaferri

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Posted 19 February 2009 - 01:18 AM

Hey Ashley! Fancy running into you here!

The Red uses a 'windowed' sensor in 2k mode... meaning that it essentially just uses a part of the sensor, which basically equates to 16mm (not sure the EXACT sensor size on this). The field of view is halved and the DoF at lenses with the equivalent FoV is larger. It's the same as the difference between 35mm and 16mm.

Just remember that if you're blowing up to theatre-size, your CoCs in 2k are smaller than in 4k mode.

Hope you're doing well! Cheers!
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