I realize that the examples can be construed as subjective publicity, but the important aspects are in the first two columns, when it comes to scoring a candidate for purchase. I believe your outcome will explain many price differences. TECHNICAL SCOREBOARD PROPOSAL FOR 4FT LED TUBES (PDF version) TECHNICAL SCOREBOARD PROPOSAL FOR 4FT LED TUBES (Excel version)  ...


In this post we have included a high-end LED tube comparison done for a very demanding customer. The CorelPRO was added to highlight that it is not in the high-end category. Enjoy! High-end LED tube comparison...
High Flicker in APPLE Stores’ lighting system

High Flicker in APPLE Stores’ lighting system

APPLE STORES LIGHTING… …one would have expected better from a technology leader! I recently visited an Apple Store in Spain, I am told they are all fitted identically world-wide. While waiting for the attendant to fetch my new smartphone, out of habit I looked up to see what kind of lighting they used: large LED panels. Out of curiosity, I decided to measure the flicker, if any, with a handy app called “Flicker Tester” developed by VISO Systems (only available for iOS). The result was staggering: Flicker Index 0.1; Percentage Flicker 98%! See the reading I got here:                                → When the attendant finally came back, I asked her if she suffered headaches during her work shift. The answer was: “How did you know?” Apparently 90% of the employees pop painkillers towards the middle of the shift, to alleviate the suffering. I tried contacting Apple to offer them my “human-centric” LED drivers, which provide 0.0 index and 4% flicker only. The problem is that Apple is so airtight that I have not been able to penetrate the account. Maybe this “making friends” post will trigger some action?...

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