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This weekly course covers the most common questions videographers encounter when shooting and editing with DSLR cameras, from choosing a frame size and frame rate to understanding moiré. Authors Rich Harrington and Robbie Carman will also help you understand the impacts of compression and the difference between cropped (or micro 4/3rds) and full-sized sensors in cameras, and much more. This continual FAQ guide is a handy way to find the answers to the questions that plague you the most.
Jim Ball: Aperture comes from the film days where lenses, had a calibration in them to let a precise amount of light onto the film plane. In digital camera speak that's, the sensor instead of the film plane. And the same principle applies with a lot of lenses. But nowadays with digital cameras, the aperture control is actually in the camera. So it's done electronically. One of the principle uses of aperture size, the wider the opening the more light gets in.
But also the shallower the depth of field, which is depth of focus, which determines how much of your image is in focus versus how much is soft, defocused.
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