Archived posting to the Leica Users Group, 1998/02/09
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]In a message dated 98-02-09 15:23:48 EST, you write: Thank you Erwin, If I understand you correctly, you are saying that to get the optimal resolution from high performance lenses like the APOs & ASPHs, you must also use a high performance film or that the gain is lost. Of course, I realize that resolution is only one factor involved with the catch- all term of **sharpness** and that just an increase in contrast can cause an apparent sharper effect, but if that is so then going to a more contrasty film would also cause an increase in apparent sharpness. Please correct me if I am wrong. Marvin Moss ======================================================= << But lenses also are really in trouble to get 80 l/mm. In this comaprison the film easily wins. If you go for high contrast transfer for both system components (film and lens); the film can handle 40 to 80 l/mm and the lens can handle 20 to 40 lines (or to be a bit tolerant 80 l/mm). In this comparison both components are about equal. The best lenses just outperform most films and the best films just outperform most lenses. Are we lucky that with Leica lenses we can have the best of both worlds. Erwin >>