Just as various paints are used to create different forms of visual art, or a choice of ingredients to cook a certain dish, or strategies to achieve a specific plan; DSLR cameras also have different types of lenses which can produce unique photos. Here are five of them:
1. Zoom Lens
The zoom lens’ focal length is
adjustable from a minimum to a maximum length. This lens has become a basic
lens for DSLRs. This usually has a lower maximum aperture than other lenses.
Its maximum aperture is greater at the wide-angle end than at the telephoto end
of the zoom range. Zoom lenses are made such that the loss of image quality
remains minimal. This kind of lens can be used particularly in medium or normal
shots.
2. Prime Lens
The prime lens or “prime” is a standard non-zoom
lens. It is smaller, lighter and cheaper than a zoom lens of the same quality. It has a larger maximum aperture,
so it can be used with less light at the same shutter speed
and can provide less depth of field if desirable.
The macro lens is
designed for extreme close-up shots. This is popular for nature shooting,
especially if the subjects are small living and non-living things. Most macro
lenses can focus to infinity with satisfactory sharpness.
4. Perspective Control Lens
The perspective control
lens allows the photographer to control the
appearance of perspective in the image; the lens can be moved
parallel to the film or sensor.
This movement of the lens allows adjusting the position of the subject in the
image area without moving the camera back; it is often used to avoid
convergence of parallel lines, such as when photographing a tall building or
other vertical structures.
5. Fisheye Lens
The fisheye lens is an extreme
wide-angle lens with an angle of view of up to 180 degrees or more, with very
noticeable (sometimes intended) distortion or the so-called convex
non-rectilinear appearance. This usually is the widest lens a DSLR can have. Its
focal length depends on the film format
it is designed for. Fisheye lenses are also used for
scientific photography such as recording of aurora and meteors. They are
also used as peephole
door viewers to give the user a wide field of view.
Article References:
- http://en.wikipedia.org/wiki/Lenses_for_SLR_and_DSLR_cameras
- http://en.wikipedia.org/wiki/Perspective_control_lens
- http://en.wikipedia.org/wiki/Fisheye_lens
Photo Sources (in chronological order from number 2 to 5):
- http://fwdcreative.com/whatwelike/optimus-prime-lens/
- http://urbanfragment.wordpress.com/category/macro/
- http://www.betterphoto.com/gallery/dynoGallDetail.asp?photoID=5812230&catID=25260
- http://photo.tutsplus.com/articles/inspiration/100-fantastic-photos-taken-with-a-fisheye-lens/
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