Philips: Ultra Definition 2700K BA11
Philips Ultra Definition 2700K BA11 light bulb test results
The verdict
A 2777K LED filament BA11 bulb. Its color rendering is excellent (CRI 96, R9 82) and its body-clock signal is moderate (46% of daylight).
A solid everyday bulb with no major weakness in my tests.
CRI 96 · Rf 95
CRI Re, the average of all 15 samples (Ra 97). #24 of 84 white-light bulbs.
R9 82
Saturated red: skin, wood, food. 100 is perfect. #46 of 86 white-light bulbs.
2777K
Sold as 2700K. Gap from natural light 22% (moderate). Tint +0.0015, close to neutral.
46% of daylight
Melanopic DER 0.46. Low is easier on sleep at night; high helps you feel alert by day.
The light
Measured spectrum, 380 to 780 nm, scaled to its peak.
How colors look
The red line pulls out where colors get more vivid and pinches in where they dull. Hover a bin for its numbers.
Where it ranks
Every white-light bulb I have tested, in its own light color. Left is warmer, up renders color more truly. Tap a dot to open that bulb.
This bulbOther bulbsFaded: discontinued
Truer color, same color temperature
Still sold, within 300K of this bulb, with a higher CRI.
Yuji SunWave 3000K A19CRI 98 · R9 95 · 3074KSimilar bulbs
Still sold, near the same color temperature, same E12 base where one qualifies.
Same line, other versions
Other Philips Ultra Definition bulbs I tested.
Specs
Power, brightness and efficacy marked "rated" are the manufacturer's numbers. I have not measured them yet.
- Brand
- Philips
- Model
- Ultra Definition
- Type
- LED filament
- Shape
- BA11
- Base
- E12
- Finish
- Clear glass
- Power (rated)
- 2.3W
- Brightness (rated)
- 185 lumens
- Efficacy (rated)
- 80 lumens per watt
- Dimmable
- Yes
- Sold as
- 2700K
- Measured
- 2777K
- Gap from natural light
- 22% (ASD)
- Tested
- Feb 11, 2023
- Instrument
- Handheld spectrometer (before the integrating sphere)
- Status
- Available