Archived posting to the Leica Users Group, 2002/08/17
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]At 03:43 PM 8/17/2002 +0000, Dan States wrote: >The shot looks quite good! Which makes me wonder about all the talk we >hear about digital needing "special lenses". It reminds me of the days >when CD's were brand new and stereo shops told everyone that their >speakers were not "digital ready". I'm still using my old "non digital" >Allisons...hmmm. > >Best wishes, >Dan States To be true to the sensor frequency, digital cameras (sensors) need specially designed lenses. The current high end SLR digital cameras, like the 1D, D3, D3, whatever, have a low pass cutoff filter permanently mounted over the sensor which cuts the lens MTF down to that which is acceptable by the sensor pixel spacing. So in effect, all lenses are dumbed down to the sensor pixel spacing frequency. That's just how it has to work. Remove that filter and you will get aliasing, color fringing, pixelated pixels, vertical stripes turned into a solid, etc. Unless, of course, you mount a lens that was designed for a digital sensor. Sorry... no free lunch. Jim - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html