Telescope focal length determines image magnification. Field of view (FOV) shows how much sky your telescope captures. Match telescope FOV to the object's size for optimal viewing. Key takeaways ...

Choosing the right focal length for your photography is a crucial part of the creative process... we explain all!

A lower focal length will make your subject appear smaller, while a higher one will enlarge them. To put it simply, this factor determines how “zoomed in” you are.

Find out more about how we test. Focal length is the distance in millimetres from the imaging surface (film or sensor) and the optical centre of the lens when it is focused at infinity.

On Apple's iPhone 15 Pro models, the Main camera now allows users to switch between three focal lengths when shooting. Keep reading to learn how it works. To take advantage of the enhanced camera ...

Focal length is one of the two primary measurements of a camera lens. The other is the "aperture," which is the lens opening (see f-stop ). The Field of View These photos were taken with an 18 ...

Disable Focal Length Presets. If you find this behavior in the Camera app unnecessary or frustrating, you can disable it by following these steps. Open the Settings app.

It's not just a matter of focal length: which aperture you select is important too. See below for how you can use depth of field to control which parts of an image appear in focus.

First up is a photo taken at 24mm, which is relatively close to the focal length of the camera on an iPhone. As you can see there is plenty of distortion in the photograph, and the car’s front ...