To beat this dead horse senseless, the problem with nruddock's technique and ockham's example is that they add new color information when you want none. The girl is not distorted at all, like my example or Jim's. SteamZ and ThrowZ will do the same thing, add more color without perturbing the image itself. SteamZ could be used if you used it only as a displacement on the image but save yourself the moolah and hassle and post it.