Archived posting to the Leica Users Group, 2007/10/30
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Quoth the Jim Nichols : > What surprised me is the level of fogging, if that is the proper > term, for it looks like grain, that I found in the low-light images. > I must admit that the film was not refrigerated. Is this the > experience others have found? Probably so. Remember that 400CN is not traditional B&W film and does not have the stability of a true silver halide emulsion. It's essentially C41 dye technology using only a single dye layer. Its stability in terms of aging, heat resistance, and fog will be much more in line with a color neg film than the B&W we know and mostly love. 4 years for HP5 isn't a problem, but 4 years out for any color neg emulsion that wasn't kept very cold is going to be difficult, to say the least. -- R. Clayton McKee http://www.rcmckee.com Photojournalist rcmckee@rcmckee.com P O Box 571900 voice/fax 713/783-3502 Houston, TX 77257-1900 cell phone # on request