Archived posting to the Leica Users Group, 2009/11/16
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Done in LF.... Expose using infinity and neutral grey card to 4 stops under your proposed exposure.... pre expose.... then reset and take your final image. Sometimes you need 5 stops down, sometimes 3 stops down. Opens up the shadows for fuller dynamic range..... Frank Filippone red735i at earthlink.net The idea was to get the image exposure over the toe of the sensitivity curve. It effectively provided an increase in apparent sensitivity of 1/2 to a full stop. Latensification involved exposing the film to mercury or ammonia vapors prior to exposure. It could also gain a one stop increase in sensitivity. These techniques are rarely used today in this era of ultra high speed films