The 23er measures after a warm-up phase of stable - '' the first minute with approximately 6,500 K, then it goes down to almost exactly 5.800 K. What I really comes to meet in person, because I calibrate my workplace to 5,800 Kelvin since time immemorial. Schön: After warming up the lamp remains stable. The color temperature does not fluctuate, the luminous intensity remains constant. Thus constant results are possible.
LifeLite hums not, no humming, no flicker, is not uncomfortably warm. In short: Do not disturb, but does what it should do.
Who as a graphic designer or photographer but a D65 lamp wants or D50er in Proof, which should make a detour around this model. The deviation of the two white points is still quite large; a complete re-calibration of the video workstation or guesswork out color comparisons between expression and monitor image would result. Since calibrated lamps were announced.
I assume that these lamp now been two and a half months every day for several hours a. So far, no failures or problems with it. But I can give no comments for longevity.
Of course I can not comment as to serial dispersion. My device is, however, absolutely fine.
One point deduction, there's only because I do not see marriage, why I should be a better 'light bulb' as described 'excellent'.
