I was wondering what peoples thoughts were on the best colour space for
doing calculations in is, particularly when computing things like the
sun/sky colour through an atmosphere model. The pbrt book has a lengthy
section on spectral representation (noting that XYZ is not a good
colour space for computing in), but it's spectrum class goes on to just
use RGB space (without ever explicitly saying so).
Obviously this is a fairly good choice for most things, but I was
wondering if anyone had experience of computing in other spaces, and
what the results were like. Is it worth the extra effort/computation
time?
