Archived posting to the Leica Users Group, 1997/03/13
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]>At 05:13 PM 13-03-97 -0600, you wrote: >>Alan Bearden wrote: >>> >>> At 06:55 AM 3/13/97 -0400, you wrote: >>> >What, if any, practical effect does the aperture setting of a enlarging >>> >lens have? > >[snip] > >>again, i'm no lens guru, but having taken the advise of many greats over >>the years and plain old trials, most lenses are at their sharpest 2 -3 >>stops from OPEN. yes, logically the depth of field would seem a >>benefit,...[snip] > >My experience has been that the wider the aperture, the better the results, >especially with fine grain films. In fact, with films such as TMAX-100, it >is possible to start loosing the grain if you stop down too much. You can >see it happening through a grain magnifier. My 50/2.8 APO-Rodagon gives me >good results wide open. The only problems are the too short exposure times >(solvable with an ND filter attached to the lens) and the above mentioned >problem of making sure that the film is flat. > >Dan C. Dan- What about going to a 75mm for 35mm negs. You might be pleased by the results. Robert