Hi Peter,

I plotted the same curves with "my favourite grapher" and something does not feel right with the geometric blurring : yours begins at x=0, but with a non zero pinhole plane thickness it should not. However, what causes this difference, I find it not so obvious as the log base two affair ?

It would be nice that you send me the source code to let me see it ; I will give you my Email address in a private message.

Paul Attached files