Feature Film | VFX Light probes
During July I spent time on the set of the Feature Film ‘Lapwing’, directed by Philip Stevens. Chiefly, my aim on set was to gather lighting/reflection data that might assist the VFX team in post-production.
As VFX lead for the film, this was a precautionary measure at this stage, as the level of VFX that may or may not be needed for the show will not be truly ascertained until the final cut is locked.
Fundamentally, a feature of this budget cannot afford large scale HDRi capture rigs. This said, I customized a series of stainless steel garden globes purchased from Amazon, so that they could be – crudely – mounted on a microphone stand.
These globes were then positioned on location in various positions/weather conditions/colour temperatures and 12 bracketed exposures were taken with a mirrorless Sony camera. Each exposure was 1 stop apart giving me a great deal of exposure data than can be combined into a single HDRi later in post.
See the image and link below for a crude/non-HDRi example of these maps.
Additionally, the reflections that the globes captured allows me to gather lighting direction and colour temperature as well as reflective environment maps – which are less important with a period show such as this. The combined images once combined and unwrapped from the globes, give me an equirectangular environment map that can be UV mapped to the environment in either Maya or Blender.
The process of creating and applying this data will be covered in future posts. Please support the film by following the official Facebook page here