In a message dated 9/9/2005 11:59:48 AM Pacific Standard Time, [EMAIL PROTECTED] writes: What you're saying is, the rear element really doesn't collimate the light bundle, that about right? Are you also saying it can't happen, according to the laws of optics as you understand them? I thought that was the reason for the odd shapes some lenses are ground to, to set up the refraction so it DID control where the light went and how it looked after it exited the last surface...
I'm not dissing you here. I am not capable of anything but the most rudimentary ray tracing and today, so many years after I learned how, not even that! keith whaley ========== I think I am getting a headache. Marnie aka Doe :-)
