NOT TRUE, Even the best 35mm film is only about 200 lp/mm.
Even using an excellent lens of 200 lp/mm results in a film/lens combination of only 100 lp/mm. The film DOES affect the result, even the best films.... JCO ---------------------------------------------------------------------------- ---- J.C. O'Connell mailto:[EMAIL PROTECTED] http://jcoconnell.com ---------------------------------------------------------------------------- ---- -----Original Message----- From: Dag T [mailto:[EMAIL PROTECTED] Sent: Sunday, September 14, 2003 4:23 PM To: [EMAIL PROTECTED] Subject: Re: Lens resolution På søndag, 14. september 2003, kl. 18:49, skrev Anders Hultman: > Bob Blakely: > >>> I've seen people here talk about the resolution of lenses. I fully >>> understand the physics behind resolution of both digital image >>> sensors and film, but what really is resolution when talking about >>> lenses? >> >> Lens resolution is defined as the number of resolution target lines >> per >> millimeter that can be discerned in the film. Discerned means that the >> individual lines from the target can be seen, however slight and >> fuzzy. >> Where the lines cannot be discerned, a (theoretically) 50% gray is >> observed. >> The lines are black and the spaces between parallel lines are white >> and of >> the same width as the lines. > > To me, this sounds like this would be a property of the film, not a > property of the lens? I mean, with higher definition film, a film with > finer grain or whatever, it would be possible to show more detail, > wouldn't it? > > Or is it really the lens itself that blurs the lines? > With a good film, the lens sets the limit, especially when using small apertures. DagT