I never said it was better than all alternatives, I said my experience is that it is difficult to beat in a general case. Bake a gauss curve out to three stand

I never said it was better than all alternatives, I said my experience is that it is difficult to beat in a general case. Bake a gauss curve out to three standard deviations into a LUT and normalize it. You can look at what PBRT does. Keep in mind that I was replying to someone confused by all the choice of filters and was giving him a very solid starting point. This isn't some grandiose claim of scientific exploration, it's experience.