can any one give some information about the concept ''scales at infinity''
Not sure about "scales at" infinity.
Do you mean the idea that one infinity is 'larger' than another ?
as a starting point.
Or are you talking about focusing a camera?
This site has something on it but, please note, they ask for money!
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei