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Hello All,

Greetings.

What would be the best way to master a 2:1 output from 2:35 :1 frame.

If we are filming with Red Komodo in 6K 4:3 with 2X i.e 4320 x 3240 (de-squeezed 8640 x 3240).

Also keeping in mind if we are using a 2x lens. 

How much of a resolution loss would be there

Regards,

Shashank

 

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First of all keep in mind that your initial resolution is 4320 x 3240 -- the resizing to take out the squeeze doesn't add resolution.

So in theory, if your image has a 2X squeeze and you want to create a 2:1 image, then your max resolution comes from a square area of the sensor, so the max resolution from your recording is 3240 x 3240.

Now how you get to an unsqueezed 2:1 frame from that sensor area is up to you, it depends on your delivery format: 4K DCP with 2:1 inside 1.85 (black borders top & bottom)? Inside 2.39 (black borders on each side)? 16x9 UHD video (3840 x 2160) with a 2:1 letterbox?

Either way, your resolution limit is 3240 x 3240.  So I guess you would start by cropping and unsqueezing to 6480 x 3240. But then whether you master for a theatrical 4K DCP first, then 3.8K UHD from that, depends on your delivery requirements.

Cinema 4K DCP
Aspect Ratio  / Resolution
Flat (1.85) / 3996 x 2160
Scope (2.39)  / 4096 x 1716
Full Container (1.90) / 4096 x 2160

I assume "full container" is used for digital IMAX releases but I'm not sure you'd be guaranteed of that so I'd probably work within the 1.85 or 2.39 containers.

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