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Using color bars to calibrate a monitor

What are color bars used for? Isn't it a throwback to earlier times? Color bars are actually used for calibrating monitors so you can get your setting right.

Lenses: How does focus work?

If you’re new to shooting video, you may notice that fellow camera geeks like to talk a lot about “glass”. While there are a lot of things made of glass in the video world, there’s only one thing called “glass”: Your camera lens. Here's how it works to produce a useable, in-focus image.

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