Thanks a lot everyone. The light was making the stark coloured water (ochre) stand out nicely in this situation. In this case I didn't do much post processing as the scanned files looked good without requiring much post processing. Generally I do work with curves, level and contrast, but very seldom with saturation. I shot some slide film as well of the same scene, but the exposure latitude of the Fuji Reala handled the strong light better than the slide film.