A sculptor doesn't necessarily need to know how to render light, because light is given to him in the real-world (or computed mathematically in a CG application), just as a painter only needs to compose from one angle in contrast to the 360 degree canvas of a sculptor.
Ọtụghị mkpa ka onye na-ese ihe mara otú e si enye ìhè, n'ihi na e nyere ya ìhè na ụwa n'ezie (ma ọ bụ na-agụnye mgbakọ na mwepụ na ngwa ngwa CG), dịka onye ntanetụ chọrọ idepụta site n'otu akụkụ dị iche na nke Iyi akwa 360 nke onye na-ese ihe.