Archived posting to the Leica Users Group, 1996/10/04
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]At 08:58 PM 10/4/96 -0400, George Zachar wrote: >Responding to Marc Small: > >Uh, what's an MTF test? And, in plain English, is >it possible to explain how intentional lens aberrations >can be made to selectively fuzz parts of an image and >not others? > >I am genuinely curious. I am thinking of sinking a lot >of money into a camera system, and if you can prove your >point, my decision will lean toward seasoned Leicas. MTF: Modulation Transfer Function -- "... a graphical representation of image quality that eliminates the need for decision making by the observer." Stroebel, et al., Photographic Materials & Processes, p. 405. Please do not bother the group with items easily ascertainable in your Village Library. I've already explained the manner in which Max Berek shaped Leitz lens design. Beyond this, please consult the (now-retired) geniuses of Wetzlar. Gianni Rogliatti will put you in touch with them. As to your selected camera system, choose what you will: I do not know what a "seasoned Leica" is -- save that mine are pretty well pounded! Perhaps you might be happier sinking your "lots of money" into a simpler system such as Canon or Nikon. Marc msmall@roanoke.infi.net FAX: +540/343-7315 Cha robh bas fir gun ghras fir!