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 ...

If you're new to optics, you might find that choosing among machine-vision lenses is a daunting task. But if you understand 10 key specifications, you can easily select the appropriate lens to ...

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 ...

Most consumer point and shoot digital cameras say something like, "5x optical zoom," or "9x optical zoom" on the box. But, when you move up to micro-4/3s and SLRs, you lose that. It makes sense - the ...

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 ...

Olympus has added a new super-zoom to its range, the M.Zuiko Digital ED 12-200mm F3.5-6.3 super telephoto zoom lens, offering up to 16.6x magnification for Micro Four Thirds cameras. Promising to be ...

Age-related macular degeneration (AMD) is the leading cause of blindness among older adults in the western world. Unfortunately, conventional optical aids provide little help for a retina which has ...