I am using Photoshop CS2. Unfortunatly hardly any tools are supported at 32 bit with CS2. I tried with a friend who had CS3 extended and most of the tools are avail at 32 bit, so I got a trial of CS3 but not the extended one and only some of the tools are supported much to my chagrin. As far as the adj layer idea, I though the whole problem was that the blending, compositing and paint operations mathmatically were created for use with Linear images. Doing stuff to them In Log space I thought caused odd side effects with the pixels themselves. So I dont know if working with an adjusment layer would actually help. Also I dont know how to create a Linear LUT offhand, would that be an S curve?