----- Original Message ----- From: "J. C. O'Connell" Subject: RE: Lens resolution
> There are lenses capable of several hundred lp/mm but this is > measured with an aerial image and 1000:1 contrast target. > You also need to use a single wavelength of light and special > fast lenses (stopping down reduces resolution). This bears no resemblance to real world photography. > > The film with 200lp/mm resolution is TMAX 100, technical pan is even > better. T-Max 100 is 63 l/mm (not lppm) at what is considered real world subject contrast. I know you are correct about Tech Pan, but the numbers are hard to get as Kodak doesn't like to publish them. > > I have heard of a few lens/film combinations reaching 100 lp/mm > so it is possible. I think it was some of the 90/100mm macros > on tech pan. It's possible, I just don't think it likely outside of a laboratory setting. > > Of course the easist solution to get true high resolution photographs > is to use LARGE FORMAT. With 35mm you are in an endless pursuit > of mediocrity... Agreed. William Robb
