Basic Drone Photography & Videography Notes: principles for basic drone photo and video shooting by Rafal Galinski & Marta Kolasa

Author:Rafal Galinski & Marta Kolasa [Galinski, Rafal]
Language: eng
Format: azw3
Published: 2019-01-13T16:00:00+00:00

Aperture

Aperture is a hole or an opening through which light gets through to the camera sensor when you take a picture. As the main factor, the aperture and focal length of an optical system determine the cone angle of a bundle of rays that come to a focus in the image plane.

The lens aperture is usually specified as an f-number the ratio of focal length to effective aperture diameter. A lens typically has a set of marked "f-stops" that the f-number can be set to. A lower f-number denotes a greater aperture opening which allows more light to reach the film or image sensor. The photography term "one f-stop" refers to a factor of √2 (approx. 1.41) change in f-number, which in turn corresponds to a factor of 2 change in light intensity.

Most popular drones do not allow us to adjust the aperture, this is possible in Phantom 4PRO, Mavic 2 Pro and Inspire.

This is measured in ‘f-stops.’ A smaller f-stop number means a bigger aperture and so more light comes through, and a bigger f-stop number means a smaller aperture, so less light comes through. In Auto mode, you can set the Aperture, but other settings will still be set automatically to match exposure.

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