Try your Lux.
My ex-wife used to complain that I watched too much television. My contention was that I don't watch TV the way most people watch it. Hence: There is a new TV ad running for a product called Fast Brite Lens Restore . It's a wax-like cream that is supposed to take your old, fuzzy glaucoma-looking car headlight covers and make them shine brighter. When I saw the ad, something looked fishy in the before and after photos. Take a closer look and you'll see that the "Before" photo measures the headlight's illumination in LUX and the "After" measures it in footcandles ( FC ). It's not an apples-to-apples comparison. I noticed this while watching the ad and rewound the ad, froze the frame and took the photo you see here. What's the difference, you ask? The two headlights aren't being measured by the same standard. I had to look it up. One footcandle equals 10.764 lux. So, the 976 footcandles shown is the same as 90.673 lux, meaning that t...