Gaining 4 Extra Stops for your VFX Plates with a Simple Trick and No Extra Lights?
4 More Stops Without Extra Lights?
Chris Godfrey (co-founder of Animal Logic) is a VFX Supe, and encountered a technical hurdle while working on The Great Gatsby (2013). He shot a car chase scene at F16 but while shooting matching plates on a stage the lighting available could only expose for F4. The obvious problem with this would be the depth of field variation between the two apertures in compositing.
To rent the lights, the power, and the rigging to brute force a properly exposed F16 would have launched the monthly rental from $300K to $4.8MM. A proposition unfeasible.
Godfrey’s solution was to leverage the high resolution of modern digital cameras by cutting the focal length of the lens and cropping into the image to achieve the same framing, which would match the depth of field.
Very interesting stuff and a compromise that proved quite effective. Read the complete article and details at fxguide. Those guys rock. And if you for some reason missed it, see some of the work completed for the film: