As usual Paul you are absolutely correct.
Here is a version just for you.
http://d1355990.i49.quadrahosting.co..._06/PaulV_.jpg
It is impossible to contract the dynamic range of reality to eight bits on a computer screen. My screen actually shows 10 bits in full colour gamut.
I am so sorry for putting up an image that does not conform to your standards. I do not even know what a minimum filter tool is. Is it a way to stop tools from having an effect?
Bert