Lens Distortion

[prashanth-v-srinivasan]

Hi, I am currently shooting VFX shots for a feature film, were heavy CG objects were need to be comped in. We are using 8mm, 12mm, 16mm, 32mm and 50mm lenses, which has high DISTORTION 

For CG elements to be perfectly composited, I believe we need to calculate actual distortion of the original footage and apply the same on the CG renders using Nuke’s ‘Lens Distortion’ node.

Now, to calculate the Lens Distortion, we have 2 options

Option 1: Shoot ‘Checker board’ or ‘Grid’ with all the Lenses and use Nuke ‘Lens Distortion’ nodes ‘Grid Analysis’ option to calculate the Lens Distortion
Option 2: Add Nuke’s ‘Lens Distortion’ node to the footage and use ‘Image Analysis’ option to calculate the Lens Distortion

Which one is best.Any suggestions?

Thanks