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What is a Digital SLR Camera?

posted 25 Oct 2010, 04:47 by Sam Mbale   [ updated 25 Oct 2010, 04:48 ]

Digital SLR, or DSLR, is an acronym for digital single lens
reflex camera.  The fundamental difference between digital
single lens reflex cameras and traditional film SLR cameras
is how the image to be photographed appears to the user.  In
a DSLR, the image appears typically through the LCD with
accurate final picture details such as focus, depth of
field, lighting, etc.  In film cameras the user can only see
what the final picture will be like through their own
perspective, i.e. how they view the final shot image.  This
is significantly different from how the camera sees the
final image, making it difficult to correctly set such
elements like focus and flash intensity.


The DSLR uses CCD micro chips, a device that can detect,
shift, and convert electrical charge into digital signals.
These micro chips transform incoming light rays from the
lens of the camera into a digital picture.  In principle,
the more light the sensors can detect, the sharper an image
will be.  DSLR cameras can produce very high resolution
pictures and most of the time, depending on the camera, can
provide better shot to shot progressive exposure.

A DSLR takes away the need to develop film.  With most
households owning a computer and printer these days, anyone
with this type of camera can easily print their own
photographs at a fraction of the cost and time it would
normally take to develop film in a studio.  As with
traditional film SLR's, they normally have interchangeable
lenses with varying focal lengths that increase zoom and
resolution of the final shot.  The convenience that these
cameras have over their counterparts makes them slightly
more expensive, though cost depends heavily on the type of
lenses used.

The popularity of DSLR's is mostly with serious photography
hobbyists and enthusiasts.  Professional photographers such
as journalists and reporters for magazines are known to
prefer digital SLR'S as well.  They are purposely built for
speed and are equipped with high speed shutters.  This makes
them more appropriate for use in situations in which the
image to be photographed is in motion (for instance in a
sports event).  They are also more highly sensitive to light
to the extent that in cases where there is low ambient light,
a photograph can still be taken.

All things considered a digital SLR is the way to go for
professional photography.  They have slowly begun to replace
the technology of older models, and as their prices continue
to decrease, more and more people will consider them for
their needs.

About the Author:

Rick Valence is a research and development specialist at
C.R.I.S. Camera services ( http://www.criscam.com ) in
Arizona.  A good meal, good music, and art are Rick's idea
of a good time.

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