Depth of Field and F-stops – PictureCorrect

Depth of Field and F-stops – PictureCorrect: "Depth of field (DOF for short) is usually associated with the aperture, which is often used interchangeably with the word f-stop. The aperture controls the amount of light that passes through the lens and onto the film–or in the digital world, onto the sensor inside the camera. This amount of light is determined by the size of the lens opening (the aperture) inside the lens. On the older, traditional 35mm cameras, the settings on the outside of the lens that controlled this function were called f-stops. That’s why even though, technically, they are two different things, many writers use the words aperture and f-stop as if they were one and the same. It’s like calling the door knob a door. You do use one thing to affect the other, but they are NOT one and the same."



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