The firstfilter that is applied to the height map is a simple Gaussian blur, which the GPU handles with ease, but which -- if left to its own devices -- would simply smooth out all the dramatic extremes in the height map and leave us with a bunch of bland rolling hills.
Instead of using senior recruiters to filter through the company's applicants, lower-level screeners process them first and only hand off the most-qualified.
When the Creative Filters are applied in Live View, users can preview the filter on the vari-angle three inch LCD touch screen without having to shoot the image first.