Archived posting to the Leica Users Group, 1999/06/27
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]For strong convergence correction, the Leitz system consisted of a tilting easel and a universal tilting negative carrier. This was used on the Valoy and Focomat I and Ic enlargers. After correcting for convergence using the easel, you would correct the focus by tilting the lens carrier. Leitz recommended using a wide angle enlarger lens for the procedure. If anyone really wants to try this, I can get the details from Kisselbach. Bill Larsen Jim Brick writes: >This only works for only small amounts of correction. It "ain't" gonna work >for a 21 or 24mm lens in a down town high rise area. DOF at the easel is >limited. If you stop your enlarger lens down to f/16 (40/50mm lens) or f/32 >(135/150mm lens) your printing exposure times will be weeks ;-) instead of >minutes. Reciprocity will kill your efforts. Early Leitz enlargers has an >easel system for correction. But it would only correct very small >convergence problems. > >This does work, but for small prints and minor correction. > >Jim > > >At 10:15 AM 6/27/99 +0100, you wrote: >>>I remember from my darkroom days (always hated being in >>>there) you could tilt the enlarging easel to correct the convergence. >>>DT >> >>dt, >> >>what a great idea! i'll definitely give it a try. >> >>guy >> >