Archived posting to the Leica Users Group, 2001/07/31
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]- --> This book is my first introduction to lens - --> aberrations, and because of the shaky physics - --> I do not have the feeling I can trust him on - --> this subject. - --What specific errors in physics did you encounter in the book? I said shaky (as in out of his depth), not wrong. One example that really sticks in my mind is where he introduces a definition of a flux (= net flow of something through a _surface_) to jump to this apparent law that for a given focal length, the _volume_ of the tube devided by the square of the max aperiture is constant. That law may be true, but I am not convinced, yet. --ps/032