Archived posting to the Leica Users Group, 1999/09/23
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Anthony Atkielski wrote: > > From: Erwin Puts <imxputs@knoware.nl> > Sent: Thursday, September 23, 1999 22:34 > Subject: [Leica] Noctilux pipe dream > > > The Noct as it is by now is the best the designers > > can compute. > > Is computation the limitation? The Leica book I have says that the Noctilux > somehow approaches some sort of limit, but doesn't explain exactly which limit > is being approached. I assume they were talking about some sort of physical > limit or optical limit. What exactly did they have in mind? I understand that > extremely fast lenses are very difficult to produce, but what makes them so? > > I once heard that someone (Canon) had once marketed a lens with a maximum > aperture of 0.7. Is this true? Another book I read says that the theoretical > limit is 0.5. Is this correct? If so, what imposes that limit? > > -- Anthony Read Erwins papers and you will find out much more I could almost say all that you need to know. His new modestly named FAQ is enough to keep you going for quite a while. Very en lightening! Again my apologies for the amazing rudeness on the list. You are a positive energy guy and you deserve better. Thanks for baring with us. Your fresh approach has good new slants to many key issues. http://www.imx.nl/photosite/leica/leicahome.html