On Thu, May 31, 2012 at 6:06 PM, Ben Goren <ben@xxxxxxxxxxxxxxxx> wrote: > I should probably add: I take a new picture of the chart and create a new > profile with every setup change -- lighting, camera position, lens, whatever. > I consider the profile valid for only that one scene and development > workflow. It's not that big a deal in practice. > Yes. This is typically a case where profiling is known to be helpful. Edmund