Telescope focal length determines image magnification. Field of view (FOV) shows how much sky your telescope displays. FOV is calculated using telescope and camera/eyepiece specs. Match telescope FOV ...

Getting a great picture of another person, or even yourself, can be a tough process as there are so many variables to account for. One that's often neglected is focal length, or what essentially ...

Photography blogger Lau offers a plain-English explanation of two of the most confusing concepts in photography: aperture and focal length. A highlight: Lenses with larger apertures are faster because ...

Standalone cameras come in a huge range of types, which are often specific to certain uses: superzooms are great for photographing birds and airplanes, medium format provides the detail needed for ...

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 ...