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Guided trail

Sensors, Cameras and Audio Trail

Nine guides in reading order, from how a camera sensor sees color to how motion sensors track movement.

9 guidesabout 67 min in total
Close-up of a DSLR camera with lens and strap on a white background.
Photo by Crisher P.H on Pexels

What is a trail? A trail is a reading path: 9 guides in the order that makes each one easier to understand. You tick off each guide as you finish it, and the progress bar remembers where you stopped.

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  1. How a Phone Camera Sensor Captures Colorbeginner 7 min read
  2. What the Megapixel Number Actually Tells You About a Cameraintermediate 8 min read
  3. How Optical and Digital Zoom Are Actually Differentbeginner 7 min read
  4. How Autofocus Decides What Part of a Photo Stays Sharpbeginner 7 min read
  5. How a Microphone Turns Sound Into Databeginner 7 min read
  6. How Noise-Cancelling Headphones Actually Cancel Noiseintermediate 8 min read
  7. How Fingerprint Sensors Recognize Your Fingerbeginner 7 min read
  8. How Face Unlock Tells You Apart From a Photointermediate 8 min read
  9. What a Gyroscope and Accelerometer Each Do in Your Phoneintermediate 8 min read

See everything in Sensors, Cameras and Audio