> > Doable. You'd want to look at what that did to the overall mix of Blue > > and Yellow and compare that to what LEDs at fixed claimed colour > > temperatures do. > Only cosmetic. Doesn't fix "holes" in the spectrum. Point missed, methinks. Note (as shown by " ... compared top ..." above that the object here was emulation of LEDs at various temperatures - not emulation of full spectrum source. Full spectrum source quite different - as we both know Russell --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .