Archived posting to the Leica Users Group, 1999/09/25
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]><Snip> > But no detail at all is rare. Low-pressure sodium is one of the few situations > in which there is no detail at all. Actually, it's no so much that there is no > detail, as that the detail in all three channels is proportionately the same, so > there are no differences that can be exploited to recover actual color. Not > surprising given that the LPS spectrum is bright-line and monochrome. I hate > LPS lamps. I guess they'd be okay for black and white, though. > > -- Anthony As you had said a few days back it is virtually monochomatic. And that specific slice of the spectrum is what your paper doesn't see I guess as it is the safelight of choice. If films are not a panchromatic as they are made out to be and if you meter is more responsive to its wavelength than you film is you would be underexposing your shots a tad. Very dark shadows go clear. I'm thinking black and white all of a sudden here. Mark Rabiner