Archived posting to the Leica Users Group, 1999/07/09
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Every lens, except some zooms and I think the Tri-Elmar, has DOF info, for that lens, engraved on the lens itself. The instruction booklet or most photo texts also tell how to read this engraved scale. Aberrations aren't involved. Lenses of the same focal length and at the same f/stop, at the same distance, have the same DOF. Jim At 10:11 AM 7/9/99 -0700, you wrote: >Mikiro Mori wrote: >><snip> >> I am beginning to understand better....@@; >> So, DOF is calculated on the assumption that the lens has no abberations. >> That's why we sometimes feel that lenses with the same focal length and f >> stop (but with different abberations) give apparently different DOFs. >> >> Mikiro >