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<< Resources Index - Camera Lenses



There are a large variety of lenses available for cameras on which the lens are interchangeable.
Every type of lens apply for different photographic applications. These type of lenses can be:
wide angle, ultra-wide angle, rectilinear, normal focal length, macro, telephoto, super-telephoto
and zoom lenses with variable focal length.

Wide-Angle Lenses are designed to capture a large field of view and are useful when the photographer must capture a a large area in a small place, or when is desired the capture of outdoor scenes which otherwise will not fit in the field of a normal focal length.

Anything under the 40mm focal length (for a 35mm camera) is called wide-angle.

________wide angle lenses
________ Canon EF 24mm
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Ultra-Wide Angle Lenses (Fisheye) have the focal length under the 17mm (for a 35mm camera). Images resulting from these lenses are distorted in such a way that straight lines will appear curved. However, many photographers are using deliberately ultra-wide-angle lenses for creating special distortion effects in their images. These are the lens types that can acquire the most angle in a scene.

_______ultra wide angle lenses
_______ Canon EF 14mm
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Rectilinear Lenses (Tilt Shift) are wide-angle, the difference in contrast with normal wide-angle lenses,
is that rectilinear lenses is not producing distorted images. An incorporated rectilinear lens will make the rectilinear correction necessary to display unaltered shapes of objects. These lenses are useful when
correct representations of objects and spaces is needed, yet with a wide angle.

_______rectilinear lenses - tilt shift
_______ Canon TS-E 24mm
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Normal Focal-Length Lenses have the range of focal length between 40mm to 58mm (for a 35mm camera), the most known is the 50mm standard lens. This normal lenses are what they claim to be; the angle of view
and the image size is the same with what the human eye see. It is preferred for portrait photography because of its great sharpness. Also due to their large apertures (sometimes even F1), therefore a small depth of field, can offer superb subject isolation from the background. Images are not distorted by this types of lenses.

__________normal focal lenght lenses
__________ Canon FD 50mm
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Macro Lenses are used for close-up photography. These lenses come with very good optics quality and
are available with various focal lengths. 85mm, 100 mm and 125mm (for a 35mm camera) are most common.
They produce great magnified images of small objects or beings. Many photographers are using macro
lenses for flower photography.

These kind of lenses offer good quality and sharp results.

____macro close-up lenses
____ Canon EF 180mm
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Telephoto Lenses

___telephoto lenses
___ Canon EF 300mm
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Super-Telephoto Lenses have longer focal lengths than telephoto lenses. Such lenses can go up to 1200mm focal lengths (for 35mm cameras), making possible wildlife photography because can be maintained a long distance from the subject. Is also used for faraway actions or sports.

_super-telephoto lenses
_ Canon EF 600mm
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Zoom Lenses (variable focal-length) are designed so you can change the focal length by moving the lens elements mechanically, usually with a mechanical ring. The main advantage of zoom lenses is having multiple focal lengths in a single lens, by moving the ring from one way to another various focal lengths are created. The major disadvantage, except bulk size, is lower picture quality compared with fixed lens.

________zoom lenses
________ Nikkor 55-200mm (Nikon)

There are four sub-categories of zoom lenses as follow (aprox.):

Wide-range - 28-80mm
Mid-range - 35-70mm
Long-range - 35-105mm
Telephoto-range - 50-200mm; 75-300mm; 100-400mm; 200-600.


 





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