Soldato
Joined
25 Nov 2005
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12,451
It literally explains how it is 12k in the link you provided.

Stitching camera arrays is sort of a technical art form as you battle all sorts of things related to camera position and optics. But there's a lot of power behind having this much captured resolution and detail. Above is the general workflow I ran through. Selecting a take and extracting Left, Middle, and Right cameras angles I experimented with a few different ways to stitch the motion, but I always targeted a Equirectangular Projection first and chose to change the projection to rectilinear (like a normal spherical lens) and crop into a standard DCI 1.9:1 Aspect Ratio. In this case the format would be considered DCI 12K.

I don't find it a suitable explanation
 
Soldato
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