Originally Posted by Kowaist
Does anyone know what the BIF notation means. PIF is Porro, individual? focus..., what is the B?
"B" Bausch & Lomb design/one-piece body
"IF" Individual Focus
“There are children playing in the streets who could solve some of my top problems in physics because they have modes of sensory perception that I lost long ago.”— J. Robert Oppenheimer