It's life Jim, but not as we know it.
- Sep 22, 2011
- Reaction score
daizeUK said:I *think* it means the luminosity i.e. perceived brightness of the bulb.
They offer a Sylvania bulb at 865 (6500K Daylight) and an Osram bulb at 950 (5000K Daylight).
So I interpeted that as the Osram bulb is brighter but a lower colour temperature with better colour rendition.
My apologies, should have given a more detailed answer. the 8 or 9 stands for the 80 or 90% colour rendition, the 50 or 65 stands for 5000K or 6500K.