Lens - responsible task.
Before its acquisition need to know what kinds of lenses there are, what are their main features and differences of each other.
Choosing a lens
Professional photographers claim that goodlens - is the key to a successful shooting. Of course, the quality of the photos will depend on the skill of photographing, and the type of machinery, and from a number of other reasons. But the role of the lens can not be underestimated. Professionals believe that it is better to buy a cheap camera and pick up for her good optics, but not vice versa.
When choosing a lens should focusprimarily for their own needs. It is important to take into account indicators such as focal length. In accordance with this option, all lenses are divided into wide-angle, super wide-angle, normal, long-focus and telephoto lenses. If the focal length is constant, such lenses are called "fixes".
Wide-angle and ultra wide-angle lensesintended primarily for shooting landscapes and general plans. Large portraits impossible to remove them, as the edges of the frame aspect ratio will be greatly distorted. As an example, a wide-angle lens with a fixed focal length can lead Canon EF 28mm f / 2.8 IS USM.
Lenses with a normal focal length - itversatile lenses. They are designed to take pictures of people and certain subjects. Many photographers prefer it to such models. The most demanded the lens with a normal focal rasstoyaniem- Canon EF 50mm f / 1.4.
Considered telephoto lenses, the focalwhose distance above 50 mm. In this model, with a focal length of 85 mm and 135 mm are considered classic portrait lenses. With their help, you can shoot close-up portraits of people. If the above model of focal length 135 mm, it already belongs to the so-called telephoto. Such lenses greatly enhance the image. With their help it is possible to do some very interesting pictures, while being at a distance from the subject.
Currently Canon brand launchesonly autofocus lenses. Built-in auto-focus allows you to take pictures in difficult conditions, when the subject is in motion. Despite the obvious advantages of such models, some photographers still use outdated neavtofokusnye lenses for slow work.
Lenses with variable focal length
Many photographers prefer to buyzoom lenses, which can change the focal length within a certain range according to your needs. The quality of these lenses somewhat lower than those at which the focal length remains the same, but their use is very convenient. Such a thing would be indispensable in travel, when a person simply can not wear a backpack with a photo equipment. Affordable Zoom Lens Canon EF-S 18-55mm f / 3.5-5.6 and more versatile Canon EF-S 18-135mm f / 3.5-5.6 are currently in high demand.
When buying a lens worth paying attention tothe value of the diaphragm. What it is lower, the more high-aperture lens is. High luminosity models allow shooting indoors with difficult lighting conditions.
Canon Lenses vary considerably in theircharacteristics. All models feature high-quality marking «L». This optics is very expensive and, as a rule, it is only used by professional photographers.