Archived posting to the Leica Users Group, 1997/12/17
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Tom, selecting a closer distance and increasing the lens's performance at infinity by the DOF, would support my statement, that (super) wide angles are not corrected for infinity, but for the corresponding "working distance". I've some good experiences with your technic and the 3.4/21 M SA, but I felt/feel the 2.8/28 M & R Elmarits', 1.4/35 asph M Summilux's, or the 4.5/38 Biogon's performance at infinity disappointing, compared to their performance at closer distances - No matter, whether I set the scale to infinity or use the DOF scale till f 8 (I never use f-stops above). Alf - -------------------------------------------------------- At 23:30 16.12.1997 -0500, Thomas Kachadurian wrote: >Perhap this is just personal voodoo, but it has been my observation that >with many wide angle lenses there is an infinity focus softness that is >greatly reduced by not focusing there. I have seen this with Nikkor 24mm >and 20mm, Canon EF 24mm and the 28mm Rokkor for the CLE. Is short, better >infinity focus is achieved shooting at f5.6 or f8 when the lens is not >focused at infinity but at about 15ft, with the infinity marker aligned >with the f4 mark on the DOF scale.