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 ...

Crop factor is an unnecessary complication for beginner photographers – just put the equivalent focal length on the lens ...

If you're getting started with portrait photography, one of the biggest questions is: what lens should I use for portraits? With the best portrait lenses coming in so many options – from affordable ...

Perspective in an image is all about the relationships between objects in the scene; specifically their relative sizes and positions … Perspective in an image is all about the relationships between ...

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 ...

\(power \ of \ a \ lens \ (D) = \frac{1}{focal \ length \ (m)}\) A lens has a power of -3.33 dioptres. Calculate the focal length and state what type of lens it is.