Thanks Cath... This shows the difference very well. I have a couple examples with the old & the new Pond probe & was going to post them this evening,  but Instead I will do a little tone mapping & set up examples with a few other HDRI that are floating out there.  Want to show the difference & the range of change before & after  with human figures, using custom shaders set to add realism, like my custom work or RSS & BagginsBill's Unbelievably Complicated Figure Shader (AMUCFS)