Goals – Telephoto Lenses
Telephoto lenses are those goals whose focal length is greater than 50mm to 35mm in the rooms. The most common focal sonoquelle 85mm, 100mm (these two objectives, however, we also find them listed in the zoom category), 135mm, 200mm, 300mm and 400mm. There are also more motivated telephoto lenses, with focal lengths of 600mm or more, but these are fairly infrequent and expensive items, specially created for special situations such as photographic safaris. The maximum lengths for telephoto lenses are around 1200mm and are characterized by presenting a very narrow viewing angle 2 degrees soon.
The telephoto lens has, as a primary function, the approach of the subject when the photographer has no way to approach himself http://bdmaster.net, ranging from sports competitions to the recovery of animals, as well as reports in complicated and dangerous situations such as battlefields.
Among the main functions of telephoto lenses’ve also is one stolen from fixed portraiture. Because of the narrow viewing angle in fact, a tele 85-135mm kind of lends itself very well to portraiture (when the face of our subject engages the entire scene) because, due to the distance from the subject itself, does not suffer from distortions and it offers a decent prospect. Obviously the main drawback is the depth of field a long focal tends to be minimal, with a flattening of the scene. Shallow depth of field that is exploited precisely in portraiture medium and maximum aperture focal you manage to get an excellent blurred, so much so that often stretch out for this type of solution instead of fixed perspective.
chromatic aberrations and low light are two of the major drawbacks of telephoto lenses because of their length and number of constituents. As they are not indifferent to the price (some canvases exceed 10 thousand euro), the construction complexity, weight, and their delicacy. Since also add the extreme sensitivity that a telephoto lens has to movements the use of a very thorough Zoom in the absence of the easel is often almost impossible (which is why many telephoto lenses are equipped with a handle or foot necessary for the support over a easel). Also eye attack of telephoto lenses to the camera because of their extreme weight, in some cases it will be possible to hold the camera as our solid to avoid doing too much pressure (and therefore risking the break) on the ring attachment.