How to choose a SLR camera lens
When the focal length is less than the head of the time, the lens can record a larger viewing angle of the image, so called wide-angle lens. The shorter the focal length the larger the angle of view. Wide-angle lens perspective is exaggerated, especially in the scenery photography can get more visual impact of the photo. The following are the same as the "
Than the head of the focal length of 1.5 to 4 times the focal length of the lens called the focus. Generally the focus of the lens in the smallest, and designed to be relatively large aperture is relatively easy, so portrait photography is the best in the focus. General head of the 1.5 to 2 times the focal length used to shoot the whole body, half of the photo. More than 2 times the lens used to shoot close-up, the lens was called "portrait king" of several lenses are in this focal lengths. The following are the same as the "
Greater than the focal length of more than 2 times the lens called the telescope lens. As the name suggests, telescope lens is able to achieve "telephoto" shooting, and more for sports, animals and other shooting, the scenery in the application of telephoto lens can make the landscape perspective is compressed.
The division of the focal length of the lens: the first is the head - the so-called standard lens. Its perspective at about 43 degrees, then the perspective of the photo is the closest to the human eye. Different pieces of the film, the head of the focal length is different. 135 pieces of the standard lens in the 50mm or so, 120 6 × 6 header focal length at 80mm, 300d of the head in the 50 ÷ 1.5 = 33mm or so. Documentary photos of the use of the header can be faithful to record what you see, so most of the documentary photography masters like to use the header.
Most people agree that the Nikon image is sharp, suitable for the scenery, Canon imaging soft, suitable for portraits and post-processing.
15-70mm camera covers the commonly used wide-angle, portrait focal lengths, but not that can only be used to shoot wide-angle and portrait. For example, some people are using wide-angle lens to shoot portrait, but got a very special effect.
But it is recommended that beginners or first hedge play and then consider buying more of the lens, when you will be more clearly what they need. The real master is how to use the hands of some of the lens to shoot, rather than what the lens to shoot. The camera behind the head is more important than the lens.
