Behind The Curtain – Furniture Grade : Fixing VFX Colorspace Issues

November 25, 2017
Dan Moran C.S.I.

VFX Colorspace issues are the last thing you need when you are on a tight deadline. Dan shares his real world experience on approaching issues like this


A Look Inside A Real Project From Quoting To Delivery

Part 2: PREPARING THE FOOTAGE FOR THE GRADE

In this insight we are going to take a look at matching the cr2 camera raw files and the ProRes 444 files that have been through VFX and as a result have VFX Colorspace issues.

The Issue

The issue of color shifting when going through the VFX process is as old as Digital Grading itself.

InĀ  the early days things were converted from log and back again for Film out and now with video editing and grading being so accessible to people it’s probably crazier than ever.

Our source material is Cr2 files which are a Canon RAW still format. Lots of latitude and options in post production.

These files are also quite high resolution which meant that the people doing the VFX cleanup couldn’t work at native resolution.

A decision was made to work at 1920×1080 which is fine but what also happened is they rendered ProRes 4444 which is great except due to it being a still camera there was no log curve applied.

This meant that all the highlights and shadows on the VFX shots were slightly cropped. There was also a slight warm tint applied to the footage.

I initially didn’t think too much of the loss of quality but as I progressed through the grade I ran into more issues.

It’s a lot easier to describe in the form of video so lets jump over to the video below.

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