Quote Originally Posted by Newt_on_Swings View Post
If I get a chance I would like to try out the CFL and LED options and test it, but I have a feeling that those bulbs are just not frosted/opal covered enough to eliminate hot spots in a condenser setup. As well as the potential difficulties with using vc papers. I really thought someone at least had tried this with one of their enlargers.

I can try this next time with a CFL bulb if you wish. I'd imagine I will have some challenge because of the time lag for coming on full strength and some after glow after it's turned off. As to LED, I'm concerned about the spectura VC papers/filters require. It'll be an interesting experiment that I don't mind doing myself.

Somewhere on APUG, there was a post from someone who made his own "cold head" with LED matrix.... I remember he used two different colors and ultra-violet.