| With new technology comes new
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| | into a single adjustable lens. This can
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| opportunity. This statement is
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| | be great if you often have to switch
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| particularly true in the case of digital
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| | between various lenses for different
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| cameras, and more importantly, as the
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| | shots, but it is important to remember
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| title of this article suggests, in the
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| | that not all zoom lenses have a constant
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| case of digital camera lenses.There are
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| | maximum aperture, and those that do are
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| so many different lenses with varying
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| | often larger and more expensive.Although
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| specifications available that it can be
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| | the maximum aperture may be reduced as
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| quite overwhelming to find exactly what
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| | you zoom in using a lens with a variable
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| it is that you require from a lens, but
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| | maximum aperture, this may not be as
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| that is where we step in to help.This
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| | important to some photographers as the
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| article acts as a guide to explain the
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| | reduced cost and size of such lenses.
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| jargon and to allow you make a
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| | Keep this in mind when purchasing a zoom
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| better-informed purchase the next time
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| | lens.Add-on LensesAdd-on or accessory
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| you are shopping for a new digital camera
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| | lenses are targeted towards compact
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| lens.Choosing a Suitable Focal
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| | digital cameras, and allow owners of such
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| LengthFocal length is probably the most
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| | models to significantly lengthen or
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| important factor that should be
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| | reduce the camera's built-in focal length
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| considered when choosing a lens, and for
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| | while at the same time being able to
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| good reason: focal lengths determine the
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| | automate camera functions including f
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| field-of-view of the photos you will be
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| | stop settings and focusing.These lenses
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| able to take successfully with your
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| | can be an excellent low-cost add-on to
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| camera.The two main types of focal length
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| | your digital camera, with telephoto
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| are telephoto and wide-angle, and while
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| | add-on lenses being able to increase
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| telephoto lenses have a narrow
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| | focal lengths by up to 300%, and
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| field-of-view and are best suited for
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| | wide-angle versions allowing for
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| close-up shots and portraits, wide-angle
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| | reduction in focal lengths of up to
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| lenses have a wider field-of-view which
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| | 30%.Final ConsiderationsThere are several
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| is perfect for indoor photography and
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| | other terms to take into consideration
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| landscapes.Keep in mind that the
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| | when buying a digital camera lens to make
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| performance of lenses can differ from
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| | sure you are making the best purchase. If
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| camera to camera, with the magnification
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| | your lens utilizes aspheric lens
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| power behind a lens generally being
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| | elements, then you can rest happily with
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| greater on a digital camera than on a
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| | the knowledge that your lens will help
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| 35mm film-based camera.The Need For
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| | produce sharper photographs and help keep
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| SpeedWhen you hear about fast and slow
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| | lens weight to a minimum.Lenses using
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| lenses, reference is being made to a
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| | internal and automatic focusing also keep
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| lens's maximum aperture, which is the
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| | lens weight down thanks to less moving
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| maximum amount of light that a lens can
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| | parts, and of course allow for faster
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| let in. A simple rule of thumb is that a
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| | focusing. Low-dispersion glass leaves
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| fast lens lets in a lot of light, while a
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| | photos looking less hazy or fuzzy, while
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| slow lens lets in less light, which
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| | stabilization systems help to keep images
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| defines how your photos will look.Maximum
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| | sharp when taken using slow shutter
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| apertures are measured in f/stop numbers,
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| | speeds.ConclusionHopefully this article
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| which are actually a ratio of the size of
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| | has helped you to better understand what
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| the lens aperture and focal length. The
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| | to look for in a digital camera lens.
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| smaller the f/number, the more light is
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| | There are a lot of terms to remember here
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| let in. An increment in the f/stop number
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| | - so before shopping for your new lens it
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| doubles the amount of light let in, so f
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| | may be a good idea to take the time to
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| 2.0 lets in twice as much light as f
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| | make a list of what you want to do with
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| 1.4.This may seem quite confusing at
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| | your camera. Then you can double check
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| first, so the easiest way to make sense
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| | your requirements against the features of
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| of it is to remember the following: fast
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| | different lenses. If you are still unsure
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| lenses are best suited towards successful
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| | if a lens will cater for your needs then
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| photography in darker lighting
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| | by all means try to test it so that you
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| conditions, and slow lenses are targeted
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| | can see some results before you buy!Gary
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| towards photography in lighter
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| | Hendricks runs a hobby site on digital
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| conditions.The Ins and Outs of a Zoom
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| | photography. Visit his website at for
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| LensUnlike a fixed-focal-length lens, a
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| | tips and tricks on buying digital
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| zoom lens often gives you the diversity
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| | cameras, as well as shooting great
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| of a range of focal lengths all rolled
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| | photos.
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