The requirement of digital camera lenses changes depend on what kind of camera you have. If you have the common camera then you really do not need to have lenses.

The two primary kinds of focal length are telephoto and wide-angle. Telephoto lenses have a narrow field-of-view and are best suited for close-up shots and portraits, while wide-angle lenses obtain a wider field-of-view which is designed for indoor photography and landscapes.

Understand that the performance of lenses can vary from camera to another, with the magnification power behind a lens usually being greater on a digital camera than on a 35mm film-based camera.

Once you hear about fast and slow lenses, reference point has been made to a lens’s maximum aperture, which is the maximum amount of light that a lens can let in. A simple guideline is that a fast lens lets in a lot of light, while a slow lens lets in less light, which defines how your pictures will look.

Maximum apertures are calculated in f/stop numbers, which are really a proportion of the size of the lens aperture as well as focal length.

Not like a fixed-focal-length lens, a zoom lens often gives you the diversity of a range of focal lengths all rolled into a single flexible lens.

Add-on or perhaps accessory lenses are targeted in the direction of compact digital cameras, and allow owners of such models to significantly lengthen or decrease the camera’s built-in focal length while at the same time being able to automate camera functions such as f/stop settings and focusing.

If the lens utilizes aspheric lens elements, then you can rest happily with the know-how that your lens will help produce sharper photos and help keep lens weight to a minimum.

Lenses using internal as well as automatic focusing also keep lens weight down thanks to less moving parts, and of course allow for faster focusing.

Carteen Array has written many articles about Digital Cameras . He comes from USA. We suggest you check out his other guide on underwater digital camera tips

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