Sylvania: Natural 2700K BR40
Sylvania Natural 2700K BR40 light bulb test results
The verdict
A 2771K LED BR40 bulb. Its color rendering is very good (CRI 91, R9 56) and its body-clock signal is moderate (48% of daylight).
A solid everyday bulb with no major weakness in my tests.
CRI 91 · Rf 93
CRI Re, the average of all 15 samples (Ra 93). #49 of 84 white-light bulbs.
R9 56
Saturated red: skin, wood, food. 100 is perfect. #59 of 86 white-light bulbs.
2771K
Sold as 2700K. Gap from natural light 15% (close). Tint -0.0007, close to neutral.
48% of daylight
Melanopic DER 0.48. 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.
Norb Sleep CA 2650K A19CRI 96 · R9 95 · 2708KWaveform Candelabra 2400K CA11CRI 96 · R9 85 · 2500KGE Sun Filled 2700K A21CRI 96 · R9 83 · 2794KGE Sun Filled 2700K BR30CRI 96 · R9 83 · 2748KSimilar bulbs
Still sold, near the same color temperature, same E26 base where one qualifies.
Same line, other versions
Other Sylvania Natural bulbs I tested.
Specs
Power, brightness and efficacy marked "rated" are the manufacturer's numbers. I have not measured them yet.
- Brand
- Sylvania
- Model
- Natural
- Type
- LED
- Shape
- BR40
- Base
- E26
- Finish
- Plastic
- Power (rated)
- 12W
- Brightness (rated)
- 1,100 lumens
- Efficacy (rated)
- 92 lumens per watt
- Dimmable
- Yes
- Sold as
- 2700K
- Measured
- 2771K
- Gap from natural light
- 15% (ASD)
- Tested
- Feb 19, 2023
- Instrument
- Handheld spectrometer (before the integrating sphere)
- Status
- Available