Focal length is the optical distance in millimeters between a camera lens and the sensor or film. It determines the height and width of the scene being captured, known as the "field of view." A prime ...

A lens focuses light onto the sensor of a digital camera and is critical to photography. To help you make an informed choice when buying or mounting an optic, we explain some of the most important ...

Photography is full of fancy terms and complicated science, but we are here to explain it all to you in simpler terms. Today we are focusing on focal length. This term gets thrown around often, ...

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 ...

WhenLaowa entered the lens market, little did we know that they would change the way photographers look at third-party lenses ...

Apple always makes big claims about the cameras in its new iPhones. But what does it actually mean when Apple says the iPhone ...

Speed, compression, and designed to cover medium format sensors – this prime telephoto lens promises to be a true ...

OM System has announced the breakthrough M.Zuiko Digital ED 50-200mm f/2.8 IS PRO—a fully weather sealed, all-purpose super ...

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 ...

Why you can trust TechRadar We spend hours testing every product or service we review, so you can be sure you're buying the best. Find out more about how we test. A lens aperture is the hole that is ...