LUTS and the VFB

[sharktacos]

When creating a LUT one typically will add a "shaper" LUT before and after the grade, first converting the linear image to log, then applying the desired color grade, then again converting back from log to linear. One reason for doing this is because a LUT only contains 0-1 range info, whereas a linear image is often above the 0-1 range.

When one saves a LUT from the VFB in .cube format, is this conversion from linear to log and back (shaper LUTS) performed automatically? If not, how are values in the image outside of the 0-1 dealt with? Are they simply clamped when the LUT is applied to the linear render?

[yolov]

Hi and sorry for the late reply. According to our developers, the LUTs exported from the VFB are clamped when applied to the linear render. I hope that this answers your question. Let us know if you need anything else.