Friday seems similar to a great time to end working, flog back with a libation and read up on something that you have been wondering about since, similar to forever. So currently you bring you a of the many dire problems of the day: backside vs. frontside bright camera sensors.
What's the difference? In construction, not much. But in use, they're similar to night and day - roughly literally. The always captivating Preston Scott over at Camera Technica has the in-depth explanation, but the rapid chronicle is surprisingly interesting.
Frontside and backside impute to where the electronics sits on the chip. Delicate silicon is done thick to end it from breaking, and then the pixels are added. On tip of this goes the circuitry. To end the wires that link up any pixel from getting in the way, they are routed around the edges, "like town blocks," in Preston's words. As these stacks obtain aloft with ever bigger pixel-counts, they shade the pixels in the same way Manhattan's high buildings shade the streets.
The solution? Flip it over and grub divided the silicon covering to exhibit the pixels. It's similar to putting all the skyscrapers subterraneous and then enjoying the undeviating fever in a pleasing prosaic field. More light gets to the sensor, creation it sufficient more sensitive.
There's more as well it than that, of course, and you should read Preston's great article. In fact, print nerds should only register to the Camera Technica RSS feed.
Technology Demystified: Backside Illuminated Sensors [Camera Technica]
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