Digital Camera Lenses

You have opened pages of magazines and have seen stunning pictures of levitation, or you have been to your Facebook page and have seen incredible pictures that make your friend look like a film star and you said to yourself, "I wonder how they make pictures like that ". The answer is, it's easy, get a digital camera and a free digital camera tutorial. However before you rush off to buy one there are a few things you need to know first.

A digital camera is an awesome appliance that can bring joy and excitement into your life if you are able to use its capabilities to the full together with some basic digital photography techniques to create fantastic photos and works of art.

All cameras either digital or analogue have one thing in common. They have as the primary equipment inside them what is known as a lens. This is an optical element usually made from plastic or glass and through which light travels from the subject and gets directed to the film or sensors at the rear end of your camera. The success of any photographic campaign depends very much on the lens and understanding the properties of lenses will help you get the best out of your digital camera.

There are basically two kinds of lenses that are found in the digital camera; the prime lens and the zoom lens. The main difference between these two types is that the prime lens has a fixed focal length whereas the zoom lens is a package containing several lens elements arrange in such a way that you can vary the focal length of the whole unit. All zoom lenses are usually described by the ratio of their longest to the shortest focal length. Both types are useful and the optimal choice depends on what you want to achieve.

As a beginner, your best bet is to purchase one of the following types of digital cameras.

1) A Compact Digital Camera

2) A Bridge Digital Camera

3) A DSLR Camera otherwise known as a digital camera SLR

There are other types of cameras but are usually reserved for more experienced or professional photographers who are more conversant with digital photography basics.

The first two types typically come with lenses that are fixed and can not be replaced but have zoom capabilities. So the challenge for you will be to choose the one with the best range of focal lengths that will best suit your photographic endeavor. Because digital zoom enlarges a small central portion of the sensor, the zoom feature is ideal for times when you can not or do not want to get close to your subject, when you want to include either more or less area of ​​the environment in your shot, or when you want to place emphasis on certain portions of your subject matter. The digital camera SLR is more versatile than the others and more expensive than course but is well worth its price. It has replaceable lens structure and you can choose an appropriate lens each time you want to shoot.

If you decide to buy a DSLR camera, then in choosing the appropriate lens to use on each occasion you will need to be aware that zoom lenses can be parfocal, meaning that they maintain focus as the focal length changes, or avarifocal which losses focus when zooming. You must understand also that some zoom lenses are long-focus lenses with focal lengths longer than a normal lens, while some others are wide-angle lenses (wider than normal). You can also get some cover vertical lengths between wide-angle and long-focus ranges.

The use of the zoom function can give rise to blurry pictures so make sure that the digital camera you purchase has image stabilization feature to correct this.

Source by Idriss Meyer

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