Discover Everything You Need to Know About Camera Lenses

Looking for a camera lens, but you are not sure whether the more expensive lens is better than the heavier lens? Confused by all the stats? Discover how the perfect lens could be sitting right in front of you. There are many different functions that they perform and knowing what they do will make purchasing camera lenses easier than ever before.

There are varying lens elements to consider, what a lens element does is it will bend the light to reflect the image in as much exacting details as it can upon the digital sensor. Optical oddities can come to pass when the light is not depicted accurately on the sensor. Vignettes, blurring, distortions, reduction in contrast and misalignment of colors may be present.

To ascertain how an item will be magnified and the angle of view, the focal length will play a key role. When you require a small focal length the image will be stretched or exaggerated in the perspective, you would use a wide angled lens. Projects that require a larger focal length will be flattened or compressed in the perspective, you would use a telephoto lens for these projects. Many people believe that the focal length changes the perspective.

Some other things you may take into consideration with the focal length is what lenses are sensitive to. Telephoto lenses tend to be more sensitive to shaky hands and the slightest movement may result in a blurred image and as a by-product they need shorter exposure times to lessen the blurring to the image. A wide focal length lens allows in more sunlight and is more immune to flare.

There are many advantages to using the zoom lenses. You can achieve different perspectives and different compositions without replacing the lens. With a zoom lens you can change the composition of the image without any cropping. There are two types of lenses for zoom, optical and digital. If you wish to have the image bent and distorted, also called interpolating, after its been attained you would use the digital zoom lens. If you wish to have the light magnified before it reaches the digital sensor, then you would use the optical zoom lens.

A prime lens is similar to the zoom lens, but has its own advantages and draw backs. They do not allow changes of composition unless you are willing to crop the image. They tend to weigh less than zoom lenses, they are faster and are cheaper. A modestly priced prime lens will perform just as well as a good quality zoom lens, if not better in terms of image quality. They tend to offer better light intake than fast zoom lenses, something you would find important for low light projects.

You may wish to consider the lens aperture. Aperture is the amount that the lens is able open up or close to let in more or less light. Apertures are listed as f-numbers, to describe their light gathering ability. The larger aperture openings have lower f-numbers, and are considered faster.

This is probably the most confounding area for most people. The faster the shutter speed, the lower the f-number, the larger the aperture, thus the narrower the depth of the field is. The slower the shutter speed, the higher the f-number, the smaller the aperture, the wider the depth of the field is.

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