Lumens Comparison
But you dont need the light in all directions. Contrast Ratio is the difference between light and dark on the screen. How To Buy The Right Cfl A Cheat Sheet Fluorescent Light Bulb Light Bulbs Bulb Watts measure energy used CFLs and LEDs use much fewer watts than incandescents with the same brightness. Lumens comparison . In each case the important factor when choosing the replacement is to get a similar Lumens rating. 730 800 lm. Energy saving lamps have high luminous efficacy more lumens per watt. 970 1100 lm. 1380 1600 lm. As a rule youll replace a standard 75-watt bulb with an energy-saving bulb of about 1100 lumens. And for our LED example you would need one with at least a 900 Lumens output. In comparison a popular but less efficient edge-lit LED panel may provide 3600 Lumens for 45W. That 250-watt bulb outputs roughly 14000 lumens on average in all directions. Watts chart below to shop for the right light bulb for your space. 430 450 lm. If you pref...