Digital BW, The Print

Paul:
Welcome to the "real world"! ;-)

Many of those LED lights are really solid state fluorescent lights without the tube. To make them "warmer" to match incandescent light bulbs, they are using a phosphor mix similar to fluorescent tubes. (native LEDs have a very cool color) 

I have noticed some of the "spiral" CF lights tend to exaggerate red balance also. Still hard to beat incandescent bulbs  for full spectrum balance.

My initiation into this cunundrum came when trying to match a B&W print done on color photo paper that had been damaged. I could match it under incandescent, or daylight, but not both. In the end, made the print using the B&W mode of the Z3100, which stayed neutral under all lighting conditions, but did not match the original chromagenic paper B&W print. (is that an oxymoron? ;-))

John Nollendorfs