From: James Bishop <bishopaj@...> Date: 2010-01-29
It might also have something to do with the UV wavelength. I think LEDs have a longer wavelength, close to purple, while the tubes might be further into the UV range. This may affect exposure time or resolution.
> Someone said that no professional board shops use ultraviolet LEDs. Why > is that? > > -- > David Griffith > dgriffi@... >