[TR] Thoughts on "Silverstar High Performance Lighting" bulbs?

[Don Hiscock]

All marketing hype, IMO. The basic principle is that filters work by
subtracting light. A dichroic filter to make the light bluer (and
hence whiter by their definition) does it by subtracting yellow- and
red-shaded light, not by adding more blue light.

So it's quite possble to be 15% whiter and lower brightness overall.
Seems almost unavoidable.

Don