Re: [Cameramakers] Ilex 10 lens elements
I am not sure I understand the comment Betcha they weren't polished to as good a figure If they were not well figured, how did they reach diffraction-limited performance (as has been reported in previous postings in this series)? Conversely, who needs the better figure if diffraction-limited performance is achieved with less?!!! Bob At 22:01 21.03.02 -0500, you wrote: The elements have a 76cm diameter, We are talking about some serious glass here!!! ;) bye, sid. Yes, I have sat at barroom tables of a lesser diameter! RKS Betcha they wern't polished to as good a figure (although I have seen a few that would make a good blank for a mirror) bye, sid. ___ Cameramakers mailing list [EMAIL PROTECTED] http://rmp.opusis.com/mailman/listinfo/cameramakers ___ Cameramakers mailing list [EMAIL PROTECTED] http://rmp.opusis.com/mailman/listinfo/cameramakers
Re: [Cameramakers] Ilex 10 lens elements
I am not sure I understand the comment Betcha they weren't polished to as good a figure If they were not well figured, how did they reach (snip) Those comments were regarding a different subject (NOT the U-2's camera lenses) and taken by most to be humourous. Have fun, bye, sid. ___ Cameramakers mailing list [EMAIL PROTECTED] http://rmp.opusis.com/mailman/listinfo/cameramakers
Re: [Cameramakers] Military lenses
Back in the mid 1960s, I had a genius here in New York named Fred Weiss make me up a mount for a 7 Aero Ektar (for which I paid about $35) that fitted it onto a Pentacon bellows which in turn was fitted onto a Robot Royal. I worked out a focussing scale and it worked beautifully for the kind of photography that I was doing then (journalism (hah!) and industrial (another hah)). I still have some of the negatives from when I was playing with it journalistically (a really disgusted hah! at this point). I lent it to a friend around 1966 who borrowed it for a shoot in Montreal and that was the last I saw of either of 'em. If anyone ever comes across the package, you'll know how it got that way. Son cosas de la vida. bye, sid. ___ Cameramakers mailing list [EMAIL PROTECTED] http://rmp.opusis.com/mailman/listinfo/cameramakers
