Archived posting to the Leica Users Group, 2005/10/15
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Peter, I was not responding to your image, this one is clearly underexposed so that there is no information to bring out. What I was specifically discussing was the use of a filter to bring out a sky or other use of a B&W contrast filter. Color negative film of C-41 B&W film does too good a job leveling out the contrast range in a negative. But in the case of a sky with an orange or red filter, you can burn down the sky to make an image that your mind saw. On ordinary B&W film on a perfect Geebee cloud day you would be hard pressed to burn in enough detail in the sky without the use of a filter. Don don.dory@gmail.com On 10/15/05, Peter Dzwig <pdzwig@summaventures.com> wrote: > > Don Dory wrote: > > > The good news is that the information is there, you just need to burn > and > > dodge to your hearts content. > > :) > > Don > > don.dory@gmail.com > > Don, > > not sure I follow this. If the contrast in the original scene is below > whatever > threshold is required for differentiation by the emulsion then although > **you** > (or I or John) may see it the film won't - and if it isn't recorded by the > emulsion you can't get it back by dodging. > > Look at: > > http://gallery.leica-users.org/album164/SouthBeachSunset20050810 > > there was plenty of info that I could resolve by eye - the film, even at > 400ASA > couldn't respond to it. The combination of eye and brain is a marvellous > imaging > device which has been worked on for maybe 2 million years or roughly ten > thousand times longer than the camera. > > You can only enhance information which is in the neg and that has to be > done > carefully otherwise you can create artefacts. > > Do I misunderstand you? > > Peter Dzwig > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >