How to choose the right lens Most standard zoom lenses give a maximum magnification factor of about 0.3x. Zoom lenses, and even some prime lenses with a ‘macro’ badge, give a greater magnification of ...

The magnification (or power) you will see through a given optical system depends on the telescope and the eyepiece. The simple formula is: Magnification = Focal length of telescope ÷ focal length of ...

If you've ever tried macro photography, you know how quickly the limits of gear can show. A proper macro lens doesn't just make things look close, it opens up an entirely new world. And the new ...