85 watt fluorescent light bulb, super bright with 5500K color temperature and 4250 Lumens output, CRI of 91, 120V. This is an energy-saving bulb with about 6,000 hours bulb life. Fits all medium-base E27/E26 sockets. Dimensions: Length: 10.5 inches; diameter: 3.9 inches; diameter of socket: 1 inch. Important: ALZO CFL bulb life is based on the bulb in an open-air upright orientation. When bulbs are installed in fixtures that lack adequate ventilation, the life of the bulb will be reduced. If an ALZO CFL bulb is installed in an overhead recessed light fixture with the bulb glass below the base, the life of the bulb will be greatly reduced.
Is a photography light bulb different from a general use bulb?
| Wattage (Energy Used): | 85 watt |
| Lumens (Brightness): | 4250 |
| Color Temperature (Appearance): | 5500K |
| CRI: | 91 |
| Voltage: | 117 |
| UV-A @1m: | 0.004mw/cm2 |
| UV-B @1m: * | >0.000uw/cm2; *Not within the range of our meter. Note: UV-A from sunlight midday = 5-10mw/cm2 |
| Frame Rate: | ALZO CFL and LED light bulbs can be used at frame rates up to 1000 fps without any flicker; they are true continuous light sources. |
|
Bulb Life: (based on 3 hrs./day) |
5.5 yrs |
|
Estimated Yearly Energy Cost: (based on 3 hrs./day and $0.11/kWh; cost depends on rates and use) |
$10.24 |
| Dimensions: | Length: 10.5 inches; diameter: 3.9 inches |
| Disposal: | Contains Mercury / For more on clean up and safe disposal, visit epa.gov/cfl |
What is CRI Color Rendering Index?
Lumens and Lux, Definition of Light Measurement