V-Ray TexLut is a V-Ray utility node that allows you to apply a lookup table (a .cube file) to any texture for managing the resulting colors.

In the example shown, a LC3DL_Fuji3510_log2hd_ConstLmap.cube LUT file has been loaded to define the texture's look.

Base Map – A slot to load the map on which the LUT is going to be applied.

LUT File – Specifies the location of the lookup table.

Convert to Log Space before applying LUT – Converts the Base Map to a logarithmic color space before applying the lookup table.