The verdict
A single color ST19 bulb. Its white light is excellent (CRI 90, Rf 92), it dims down to 30 lm, its warmest white is 2718K, and I measured no flicker risk.
It cannot dim low enough for a night light. The lowest setting is still 30 lm.
CRI 90 · Rf 92
Averaged over its warm, neutral and cool settings. #44 of 119 bulbs.
Down to 30 lm
Brightest white 587 lm. #91 of 119 bulbs.
Warmest white 2718K
mel-DER 0.45 at that setting. Daylight is 1.0. #108 of 119 bulbs.
No risk at full, no risk at half
Graded against IEEE 1789.
Full brightnessHalf
The white settings
Its one white setting, measured at full brightness.
How colors look
At the selected setting. The red line pulls out where colors get more vivid and pinches in where they dull.
Flicker
Measured with a flicker meter at full and half brightness.
FullHalf
Where it ranks
All 120 bulbs. Left dims lower, up renders color more truly. Tap a dot to open that bulb.
This bulbOther bulbsHigh flicker riskDiscontinued
Beat it on both
Still sold, dims lower and has truer color, without high flicker.
GE Cync CLEDR309CDENCRI 93 · 0.7 lm · BR30 · $25GE Cync CLEDR309CDRVCRI 93 · 1.3 lm · BR30 · $20innr AE 270 TCRI 92 · 29 lm · A19 · $20Philips Hue LCZ002CRI 91 · 0.8 lm · Ellipse · $99Similar bulbs
Still sold, same E26 base.
Setup and specs
- Color mode
- Single color
- White range
- 2700K
- Shape
- ST19
- Base
- E26
- Dimming curve
- Logarithmic
- Max power
- 5.1 W
- Weight
- 48 g
- Firmware tested
- 1.3.109
- Tested
- Jul 11, 2024
- Features
- Filament style