Hello once again Remco and Phil,
The concept of the halos is full of trade-offs. Could it be Blurring or maybe Alliasing? This seem to be similar to the complex nature of enlarging a photograph. Algorithms don't treat all pixels equally.

I decided to step away from the math for some experiments ...

Hello Remco/Phil,
This is my first post. I agree completely with Phil on the Halos. It is quite frustrating. I was hoping to hear that Phil's Phase One would have solved the problem. What lens are you using, Phil? How are you advancing the setup? Is it the NovoFlex? I am working a number of ...