Hi all
Took on board some of your comments and here is the !Industrial Waste" version of my Crater Pool scene The barrel is mine (I think done in C4d, can't remember though) Its the first time I've managed to use image masks to give anything like the correct result. The subsurface colouring in the water is masked and so is the spill from the barrel in the foreground.
Hope yo like. C&C very welcome.
Miles