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Issue 1
Welcome to the first edition of Kelly’s Kamera Korner, which I hope
will help you get the most use out of your camera and make photography
more enjoyable.
For
this installment, let’s have a quick background on how cameras work
and the most popular types of cameras.
All cameras have an optical element (lens), a recording element
(film or digital sensor), and a mechanical element (the camera body).
When you take a photograph, the camera records the light pattern
of the image on the recording element.
While the internal workings are little more complicated, that’s
about all you really need to know.
Compact
cameras typically use 35mm or Advanced Photo System (APS) film and have
automatic exposure controls and focusing.
They are also referred to as point-and-shoot because that is all
that is required. The
viewfinder is offset from the lens making what you see slightly
different from the actual image. Compact
cameras are small and easy to use and require minimal input from the
user.
Single
Lens Reflex (SLR) cameras have a body with a detachable lens.
They use a mirror to direct the lens image to the viewfinder, so
you see the actual image. The camera’s “single lens” is used to both view
and photograph the subject. SLR
cameras are versatile because you can use settings ranging from fully
automatic to fully manual in controlling shutter speed, aperture, and
focus. You can also change lenses to get different focal lengths,
which allow you to zoom in (telephoto) or out (wide angle). You can also attach different accessories such as a more
powerful flash or filters for different effects.
Digital cameras come in all shapes, sizes, and price
ranges and have become the camera of choice for amateurs and
professionals alike. Their ease of use, versatility, and “instant
gratification” have led to a huge growth in sales since their
introduction, and a reduction in the purchase of film cameras.
(In fact, a major move came in January 2004 from Kodak, who
announced that they would stop selling APS and reloadable 35mm film
cameras in the US, Canada, and Western Europe.) While the early digital
cameras did not produce images comparable to film, today there is
virtually no difference when using a good quality digital camera.
Digital cameras use the basic elements described above, but use
an image sensor to record the light.
The sensor can be either a charge coupled device (CCD) or
complementary metal oxide semiconductor (CMOS).
Each has unique strengths and weaknesses giving advantages in
different applications. (Perhaps
a topic for another time.)
Digital
cameras can range from very small to fit in a pocket (including camera
phones) to the latest digital SLR cameras.
One of the problems digital cameras have typically had is a delay
between pressing the button and taking the photo, which can cause you to
miss the shot. One solution
to this is the digital SLR, which uses an actual mechanical reflex that
reacts when you press the button. While
the price of digital SLR cameras previously kept them only for the true
professionals, prices have drastically come down in recent years, making
many of them available for less than $1000.
This seems to be one of the fastest growing areas of digital
photography.
If you are in the market for a digital camera, the options may be
overwhelming. I recommend
several approaches to narrow down your search.
Borrow a friend’s camera to see if you like it and what
features are important to you. Go
to a local camera store and talk to the experts.
They will let you use the camera in the store to get a feel for
it. (Be sure to check the
delay between pressing the button and taking the photo.)
Surf the web to read what others are saying.
One good site is www.dpreview.com, which has a Buyer’s Guide to
compare features. While you
definitely need to do your homework, you could spend forever researching
or waiting for the price to come down on the perfect camera.
Set a deadline for when you want your camera (such as an event
you want to use it for). At
some point, you just need to trust yourself and make the plunge!
(If you want the camera for an event, make sure you give yourself
enough time to learn how to use it.)
Believe it or
not, you can get a good digital camera for under $200.
Anything with at least 3 megapixels can give you a quality image
up to 8x10. (The more
megapixels the better.) My
first digital camera in 2003 had 3.2 megapixels and produced many of the
photos on my website, many of which I print at 8x10” size.
Stay
tuned next time when we will discuss megapixels and related issues.
(If you have a question or topic you would like to see discussed,
please e-mail ka_photos@comcast.net.)
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